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mips: ath79: add support for QCA953x SOCs
This patch enable work for qca953x SOC. Signed-off-by: Wills Wang <wills.wang@live.com>
This commit is contained in:
Wills Wang
Daniel Schwierzeck
parent
ee7bb5be35
commit
9b03f802ae
@ -13,4 +13,13 @@ config SOC_AR933X
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help
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This supports QCA/Atheros ar933x family SOCs.
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config SOC_QCA953X
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bool
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select SUPPORTS_BIG_ENDIAN
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select SUPPORTS_CPU_MIPS32_R1
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select SUPPORTS_CPU_MIPS32_R2
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select MIPS_TUNE_24KC
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help
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This supports QCA/Atheros qca953x family SOCs.
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endmenu
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@ -6,4 +6,5 @@ obj-y += reset.o
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obj-y += cpu.o
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obj-y += dram.o
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obj-$(CONFIG_SOC_AR933X) += ar933x/
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obj-$(CONFIG_SOC_AR933X) += ar933x/
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obj-$(CONFIG_SOC_QCA953X) += qca953x/
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7
arch/mips/mach-ath79/qca953x/Makefile
Normal file
7
arch/mips/mach-ath79/qca953x/Makefile
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@ -0,0 +1,7 @@
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#
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# SPDX-License-Identifier: GPL-2.0+
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#
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obj-y += clk.o
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obj-y += ddr.o
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obj-y += lowlevel_init.o
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111
arch/mips/mach-ath79/qca953x/clk.c
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111
arch/mips/mach-ath79/qca953x/clk.c
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@ -0,0 +1,111 @@
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/*
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* Copyright (C) 2015-2016 Wills Wang <wills.wang@live.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/addrspace.h>
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#include <asm/types.h>
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#include <mach/ar71xx_regs.h>
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#include <mach/reset.h>
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DECLARE_GLOBAL_DATA_PTR;
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static u32 qca953x_get_xtal(void)
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{
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u32 val;
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val = get_bootstrap();
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if (val & QCA953X_BOOTSTRAP_REF_CLK_40)
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return 40000000;
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else
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return 25000000;
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}
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int get_serial_clock(void)
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{
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return qca953x_get_xtal();
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}
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int get_clocks(void)
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{
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void __iomem *regs;
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u32 val, ctrl, xtal, pll, div;
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regs = map_physmem(AR71XX_PLL_BASE, AR71XX_PLL_SIZE,
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MAP_NOCACHE);
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xtal = qca953x_get_xtal();
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ctrl = readl(regs + QCA953X_PLL_CLK_CTRL_REG);
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val = readl(regs + QCA953X_PLL_CPU_CONFIG_REG);
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/* VCOOUT = XTAL * DIV_INT */
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div = (val >> QCA953X_PLL_CPU_CONFIG_REFDIV_SHIFT)
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& QCA953X_PLL_CPU_CONFIG_REFDIV_MASK;
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pll = xtal / div;
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/* PLLOUT = VCOOUT * (1/2^OUTDIV) */
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div = (val >> QCA953X_PLL_CPU_CONFIG_NINT_SHIFT)
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& QCA953X_PLL_CPU_CONFIG_NINT_MASK;
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pll *= div;
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div = (val >> QCA953X_PLL_CPU_CONFIG_OUTDIV_SHIFT)
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& QCA953X_PLL_CPU_CONFIG_OUTDIV_MASK;
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if (!div)
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div = 1;
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pll >>= div;
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/* CPU_CLK = PLLOUT / CPU_POST_DIV */
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div = ((ctrl >> QCA953X_PLL_CLK_CTRL_CPU_POST_DIV_SHIFT)
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& QCA953X_PLL_CLK_CTRL_CPU_POST_DIV_MASK) + 1;
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gd->cpu_clk = pll / div;
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val = readl(regs + QCA953X_PLL_DDR_CONFIG_REG);
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/* VCOOUT = XTAL * DIV_INT */
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div = (val >> QCA953X_PLL_DDR_CONFIG_REFDIV_SHIFT)
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& QCA953X_PLL_DDR_CONFIG_REFDIV_MASK;
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pll = xtal / div;
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/* PLLOUT = VCOOUT * (1/2^OUTDIV) */
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div = (val >> QCA953X_PLL_DDR_CONFIG_NINT_SHIFT)
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& QCA953X_PLL_DDR_CONFIG_NINT_MASK;
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pll *= div;
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div = (val >> QCA953X_PLL_DDR_CONFIG_OUTDIV_SHIFT)
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& QCA953X_PLL_DDR_CONFIG_OUTDIV_MASK;
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if (!div)
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div = 1;
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pll >>= div;
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/* DDR_CLK = PLLOUT / DDR_POST_DIV */
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div = ((ctrl >> QCA953X_PLL_CLK_CTRL_DDR_POST_DIV_SHIFT)
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& QCA953X_PLL_CLK_CTRL_DDR_POST_DIV_MASK) + 1;
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gd->mem_clk = pll / div;
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div = ((ctrl >> QCA953X_PLL_CLK_CTRL_AHB_POST_DIV_SHIFT)
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& QCA953X_PLL_CLK_CTRL_AHB_POST_DIV_MASK) + 1;
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if (ctrl & QCA953X_PLL_CLK_CTRL_AHBCLK_FROM_DDRPLL) {
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/* AHB_CLK = DDR_CLK / AHB_POST_DIV */
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gd->bus_clk = gd->mem_clk / (div + 1);
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} else {
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/* AHB_CLK = CPU_CLK / AHB_POST_DIV */
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gd->bus_clk = gd->cpu_clk / (div + 1);
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}
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return 0;
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}
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ulong get_bus_freq(ulong dummy)
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{
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if (!gd->bus_clk)
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get_clocks();
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return gd->bus_clk;
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}
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ulong get_ddr_freq(ulong dummy)
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{
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if (!gd->mem_clk)
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get_clocks();
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return gd->mem_clk;
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}
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472
arch/mips/mach-ath79/qca953x/ddr.c
Normal file
472
arch/mips/mach-ath79/qca953x/ddr.c
Normal file
@ -0,0 +1,472 @@
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/*
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* Copyright (C) 2015-2016 Wills Wang <wills.wang@live.com>
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* Based on Atheros LSDK/QSDK
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/addrspace.h>
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#include <asm/types.h>
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#include <mach/ar71xx_regs.h>
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#include <mach/reset.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define DDR_CTRL_UPD_EMR3S BIT(5)
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#define DDR_CTRL_UPD_EMR2S BIT(4)
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#define DDR_CTRL_PRECHARGE BIT(3)
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#define DDR_CTRL_AUTO_REFRESH BIT(2)
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#define DDR_CTRL_UPD_EMRS BIT(1)
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#define DDR_CTRL_UPD_MRS BIT(0)
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#define DDR_REFRESH_EN BIT(14)
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#define DDR_REFRESH_M 0x3ff
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#define DDR_REFRESH(x) ((x) & DDR_REFRESH_M)
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#define DDR_REFRESH_VAL (DDR_REFRESH_EN | DDR_REFRESH(312))
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#define DDR_TRAS_S 0
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#define DDR_TRAS_M 0x1f
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#define DDR_TRAS(x) (((x) & DDR_TRAS_M) << DDR_TRAS_S)
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#define DDR_TRCD_M 0xf
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#define DDR_TRCD_S 5
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#define DDR_TRCD(x) (((x) & DDR_TRCD_M) << DDR_TRCD_S)
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#define DDR_TRP_M 0xf
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#define DDR_TRP_S 9
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#define DDR_TRP(x) (((x) & DDR_TRP_M) << DDR_TRP_S)
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#define DDR_TRRD_M 0xf
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#define DDR_TRRD_S 13
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#define DDR_TRRD(x) (((x) & DDR_TRRD_M) << DDR_TRRD_S)
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#define DDR_TRFC_M 0x7f
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#define DDR_TRFC_S 17
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#define DDR_TRFC(x) (((x) & DDR_TRFC_M) << DDR_TRFC_S)
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#define DDR_TMRD_M 0xf
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#define DDR_TMRD_S 23
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#define DDR_TMRD(x) (((x) & DDR_TMRD_M) << DDR_TMRD_S)
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#define DDR_CAS_L_M 0x17
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#define DDR_CAS_L_S 27
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#define DDR_CAS_L(x) (((x) & DDR_CAS_L_M) << DDR_CAS_L_S)
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#define DDR_OPEN BIT(30)
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#define DDR1_CONF_REG_VAL (DDR_TRAS(16) | DDR_TRCD(6) | \
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DDR_TRP(6) | DDR_TRRD(4) | \
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DDR_TRFC(7) | DDR_TMRD(5) | \
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DDR_CAS_L(7) | DDR_OPEN)
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#define DDR2_CONF_REG_VAL (DDR_TRAS(27) | DDR_TRCD(9) | \
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DDR_TRP(9) | DDR_TRRD(7) | \
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DDR_TRFC(21) | DDR_TMRD(15) | \
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DDR_CAS_L(17) | DDR_OPEN)
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#define DDR_BURST_LEN_S 0
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#define DDR_BURST_LEN_M 0xf
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#define DDR_BURST_LEN(x) ((x) << DDR_BURST_LEN_S)
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#define DDR_BURST_TYPE BIT(4)
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#define DDR_CNTL_OE_EN BIT(5)
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#define DDR_PHASE_SEL BIT(6)
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#define DDR_CKE BIT(7)
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#define DDR_TWR_S 8
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#define DDR_TWR_M 0xf
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#define DDR_TWR(x) (((x) & DDR_TWR_M) << DDR_TWR_S)
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#define DDR_TRTW_S 12
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#define DDR_TRTW_M 0x1f
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#define DDR_TRTW(x) (((x) & DDR_TRTW_M) << DDR_TRTW_S)
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#define DDR_TRTP_S 17
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#define DDR_TRTP_M 0xf
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#define DDR_TRTP(x) (((x) & DDR_TRTP_M) << DDR_TRTP_S)
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#define DDR_TWTR_S 21
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#define DDR_TWTR_M 0x1f
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#define DDR_TWTR(x) (((x) & DDR_TWTR_M) << DDR_TWTR_S)
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#define DDR_G_OPEN_L_S 26
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#define DDR_G_OPEN_L_M 0xf
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#define DDR_G_OPEN_L(x) ((x) << DDR_G_OPEN_L_S)
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#define DDR_HALF_WIDTH_LOW BIT(31)
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#define DDR1_CONF2_REG_VAL (DDR_BURST_LEN(8) | DDR_CNTL_OE_EN | \
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DDR_CKE | DDR_TWR(13) | DDR_TRTW(14) | \
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DDR_TRTP(8) | DDR_TWTR(14) | \
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DDR_G_OPEN_L(6) | DDR_HALF_WIDTH_LOW)
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#define DDR2_CONF2_REG_VAL (DDR_BURST_LEN(8) | DDR_CNTL_OE_EN | \
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DDR_CKE | DDR_TWR(1) | DDR_TRTW(14) | \
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DDR_TRTP(9) | DDR_TWTR(21) | \
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DDR_G_OPEN_L(8) | DDR_HALF_WIDTH_LOW)
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#define DDR_TWR_MSB BIT(3)
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#define DDR_TRAS_MSB BIT(2)
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#define DDR_TRFC_MSB_M 0x3
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#define DDR_TRFC_MSB(x) (x)
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#define DDR1_CONF3_REG_VAL 0
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#define DDR2_CONF3_REG_VAL (DDR_TWR_MSB | DDR_TRFC_MSB(2))
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#define DDR_CTL_SRAM_TSEL BIT(30)
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#define DDR_CTL_SRAM_GE0_SYNC BIT(20)
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#define DDR_CTL_SRAM_GE1_SYNC BIT(19)
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#define DDR_CTL_SRAM_USB_SYNC BIT(18)
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#define DDR_CTL_SRAM_PCIE_SYNC BIT(17)
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#define DDR_CTL_SRAM_WMAC_SYNC BIT(16)
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#define DDR_CTL_SRAM_MISC1_SYNC BIT(15)
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#define DDR_CTL_SRAM_MISC2_SYNC BIT(14)
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#define DDR_CTL_PAD_DDR2_SEL BIT(6)
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#define DDR_CTL_HALF_WIDTH BIT(1)
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#define DDR_CTL_CONFIG_VAL (DDR_CTL_SRAM_TSEL | \
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DDR_CTL_SRAM_GE0_SYNC | \
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DDR_CTL_SRAM_GE1_SYNC | \
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DDR_CTL_SRAM_USB_SYNC | \
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DDR_CTL_SRAM_PCIE_SYNC | \
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DDR_CTL_SRAM_WMAC_SYNC | \
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DDR_CTL_HALF_WIDTH)
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#define DDR_BURST_GE0_MAX_BL_S 0
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#define DDR_BURST_GE0_MAX_BL_M 0xf
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#define DDR_BURST_GE0_MAX_BL(x) \
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(((x) & DDR_BURST_GE0_MAX_BL_M) << DDR_BURST_GE0_MAX_BL_S)
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#define DDR_BURST_GE1_MAX_BL_S 4
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#define DDR_BURST_GE1_MAX_BL_M 0xf
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#define DDR_BURST_GE1_MAX_BL(x) \
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(((x) & DDR_BURST_GE1_MAX_BL_M) << DDR_BURST_GE1_MAX_BL_S)
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#define DDR_BURST_PCIE_MAX_BL_S 8
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#define DDR_BURST_PCIE_MAX_BL_M 0xf
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#define DDR_BURST_PCIE_MAX_BL(x) \
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(((x) & DDR_BURST_PCIE_MAX_BL_M) << DDR_BURST_PCIE_MAX_BL_S)
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#define DDR_BURST_USB_MAX_BL_S 12
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#define DDR_BURST_USB_MAX_BL_M 0xf
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#define DDR_BURST_USB_MAX_BL(x) \
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(((x) & DDR_BURST_USB_MAX_BL_M) << DDR_BURST_USB_MAX_BL_S)
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#define DDR_BURST_CPU_MAX_BL_S 16
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#define DDR_BURST_CPU_MAX_BL_M 0xf
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#define DDR_BURST_CPU_MAX_BL(x) \
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(((x) & DDR_BURST_CPU_MAX_BL_M) << DDR_BURST_CPU_MAX_BL_S)
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#define DDR_BURST_RD_MAX_BL_S 20
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#define DDR_BURST_RD_MAX_BL_M 0xf
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#define DDR_BURST_RD_MAX_BL(x) \
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(((x) & DDR_BURST_RD_MAX_BL_M) << DDR_BURST_RD_MAX_BL_S)
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#define DDR_BURST_WR_MAX_BL_S 24
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#define DDR_BURST_WR_MAX_BL_M 0xf
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#define DDR_BURST_WR_MAX_BL(x) \
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(((x) & DDR_BURST_WR_MAX_BL_M) << DDR_BURST_WR_MAX_BL_S)
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#define DDR_BURST_RWP_MASK_EN_S 28
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#define DDR_BURST_RWP_MASK_EN_M 0x3
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#define DDR_BURST_RWP_MASK_EN(x) \
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(((x) & DDR_BURST_RWP_MASK_EN_M) << DDR_BURST_RWP_MASK_EN_S)
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#define DDR_BURST_CPU_PRI_BE BIT(30)
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#define DDR_BURST_CPU_PRI BIT(31)
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#define DDR_BURST_VAL (DDR_BURST_CPU_PRI_BE | \
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DDR_BURST_RWP_MASK_EN(3) | \
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DDR_BURST_WR_MAX_BL(4) | \
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DDR_BURST_RD_MAX_BL(4) | \
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DDR_BURST_CPU_MAX_BL(4) | \
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DDR_BURST_USB_MAX_BL(4) | \
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DDR_BURST_PCIE_MAX_BL(4) | \
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DDR_BURST_GE1_MAX_BL(4) | \
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DDR_BURST_GE0_MAX_BL(4))
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#define DDR_BURST_WMAC_MAX_BL_S 0
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#define DDR_BURST_WMAC_MAX_BL_M 0xf
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#define DDR_BURST_WMAC_MAX_BL(x) \
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(((x) & DDR_BURST_WMAC_MAX_BL_M) << DDR_BURST_WMAC_MAX_BL_S)
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#define DDR_BURST2_VAL DDR_BURST_WMAC_MAX_BL(4)
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#define DDR2_CONF_TWL_S 10
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#define DDR2_CONF_TWL_M 0xf
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#define DDR2_CONF_TWL(x) \
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(((x) & DDR2_CONF_TWL_M) << DDR2_CONF_TWL_S)
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#define DDR2_CONF_ODT BIT(9)
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#define DDR2_CONF_TFAW_S 2
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#define DDR2_CONF_TFAW_M 0x3f
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#define DDR2_CONF_TFAW(x) \
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(((x) & DDR2_CONF_TFAW_M) << DDR2_CONF_TFAW_S)
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#define DDR2_CONF_EN BIT(0)
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#define DDR2_CONF_VAL (DDR2_CONF_TWL(5) | \
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DDR2_CONF_TFAW(31) | \
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DDR2_CONF_ODT | \
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DDR2_CONF_EN)
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#define DDR1_EXT_MODE_VAL 0
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#define DDR2_EXT_MODE_VAL 0x402
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#define DDR2_EXT_MODE_OCD_VAL 0x782
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#define DDR1_MODE_DLL_VAL 0x133
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#define DDR2_MODE_DLL_VAL 0x143
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#define DDR1_MODE_VAL 0x33
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#define DDR2_MODE_VAL 0x43
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#define DDR1_TAP_VAL 0x20
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#define DDR2_TAP_VAL 0x10
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#define DDR_REG_BIST_MASK_ADDR_0 0x2c
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#define DDR_REG_BIST_MASK_ADDR_1 0x30
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#define DDR_REG_BIST_MASK_AHB_GE0_0 0x34
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#define DDR_REG_BIST_COMP_AHB_GE0_0 0x38
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#define DDR_REG_BIST_MASK_AHB_GE1_0 0x3c
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#define DDR_REG_BIST_COMP_AHB_GE1_0 0x40
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#define DDR_REG_BIST_COMP_ADDR_0 0x64
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#define DDR_REG_BIST_COMP_ADDR_1 0x68
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#define DDR_REG_BIST_MASK_AHB_GE0_1 0x6c
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#define DDR_REG_BIST_COMP_AHB_GE0_1 0x70
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#define DDR_REG_BIST_MASK_AHB_GE1_1 0x74
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#define DDR_REG_BIST_COMP_AHB_GE1_1 0x78
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#define DDR_REG_BIST 0x11c
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#define DDR_REG_BIST_STATUS 0x120
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#define DDR_BIST_COMP_CNT_S 1
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#define DDR_BIST_COMP_CNT_M 0xff
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#define DDR_BIST_COMP_CNT(x) \
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(((x) & DDR_BIST_COMP_CNT_M) << DDR_BIST_COMP_CNT_S)
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#define DDR_BIST_COMP_CNT_MASK \
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(DDR_BIST_COMP_CNT_M << DDR_BIST_COMP_CNT_S)
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#define DDR_BIST_TEST_START BIT(0)
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#define DDR_BIST_STATUS_DONE BIT(0)
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/* 4 Row Address Bits, 4 Column Address Bits, 2 BA bits */
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#define DDR_BIST_MASK_ADDR_VAL 0xfa5de83f
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|
||||
#define DDR_TAP_MAGIC_VAL 0xaa55aa55
|
||||
#define DDR_TAP_MAX_VAL 0x40
|
||||
|
||||
void ddr_init(void)
|
||||
{
|
||||
void __iomem *regs;
|
||||
u32 val;
|
||||
|
||||
regs = map_physmem(AR71XX_DDR_CTRL_BASE, AR71XX_DDR_CTRL_SIZE,
|
||||
MAP_NOCACHE);
|
||||
val = get_bootstrap();
|
||||
if (val & QCA953X_BOOTSTRAP_DDR1) {
|
||||
writel(DDR_CTL_CONFIG_VAL, regs + QCA953X_DDR_REG_CTL_CONF);
|
||||
udelay(10);
|
||||
|
||||
/* For 16-bit DDR */
|
||||
writel(0xffff, regs + AR71XX_DDR_REG_RD_CYCLE);
|
||||
udelay(100);
|
||||
|
||||
/* Burst size */
|
||||
writel(DDR_BURST_VAL, regs + QCA953X_DDR_REG_BURST);
|
||||
udelay(100);
|
||||
writel(DDR_BURST2_VAL, regs + QCA953X_DDR_REG_BURST2);
|
||||
udelay(100);
|
||||
|
||||
/* AHB maximum timeout */
|
||||
writel(0xfffff, regs + QCA953X_DDR_REG_TIMEOUT_MAX);
|
||||
udelay(100);
|
||||
|
||||
/* DRAM timing */
|
||||
writel(DDR1_CONF_REG_VAL, regs + AR71XX_DDR_REG_CONFIG);
|
||||
udelay(100);
|
||||
writel(DDR1_CONF2_REG_VAL, regs + AR71XX_DDR_REG_CONFIG2);
|
||||
udelay(100);
|
||||
writel(DDR1_CONF3_REG_VAL, regs + QCA953X_DDR_REG_CONFIG3);
|
||||
udelay(100);
|
||||
|
||||
/* Precharge All */
|
||||
writel(DDR_CTRL_PRECHARGE, regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(100);
|
||||
|
||||
/* ODT disable, Full strength, Enable DLL */
|
||||
writel(DDR1_EXT_MODE_VAL, regs + AR71XX_DDR_REG_EMR);
|
||||
udelay(100);
|
||||
|
||||
/* Update Extended Mode Register Set (EMRS) */
|
||||
writel(DDR_CTRL_UPD_EMRS, regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(100);
|
||||
|
||||
/* Reset DLL, CAS Latency 3, Burst Length 8 */
|
||||
writel(DDR1_MODE_DLL_VAL, regs + AR71XX_DDR_REG_MODE);
|
||||
udelay(100);
|
||||
|
||||
/* Update Mode Register Set (MRS) */
|
||||
writel(DDR_CTRL_UPD_MRS, regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(100);
|
||||
|
||||
/* Precharge All */
|
||||
writel(DDR_CTRL_PRECHARGE, regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(100);
|
||||
|
||||
/* Auto Refresh */
|
||||
writel(DDR_CTRL_AUTO_REFRESH, regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(100);
|
||||
writel(DDR_CTRL_AUTO_REFRESH, regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(100);
|
||||
|
||||
/* Normal DLL, CAS Latency 3, Burst Length 8 */
|
||||
writel(DDR1_MODE_VAL, regs + AR71XX_DDR_REG_MODE);
|
||||
udelay(100);
|
||||
|
||||
/* Update Mode Register Set (MRS) */
|
||||
writel(DDR_CTRL_UPD_MRS, regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(100);
|
||||
|
||||
/* Refresh time control */
|
||||
writel(DDR_REFRESH_VAL, regs + AR71XX_DDR_REG_REFRESH);
|
||||
udelay(100);
|
||||
|
||||
/* DQS 0 Tap Control */
|
||||
writel(DDR1_TAP_VAL, regs + AR71XX_DDR_REG_TAP_CTRL0);
|
||||
|
||||
/* DQS 1 Tap Control */
|
||||
writel(DDR1_TAP_VAL, regs + AR71XX_DDR_REG_TAP_CTRL1);
|
||||
} else {
|
||||
writel(DDR_CTRL_UPD_EMR2S, regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(10);
|
||||
writel(DDR_CTRL_UPD_EMR3S, regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(10);
|
||||
writel(DDR_CTL_CONFIG_VAL | DDR_CTL_PAD_DDR2_SEL,
|
||||
regs + QCA953X_DDR_REG_CTL_CONF);
|
||||
udelay(10);
|
||||
|
||||
/* For 16-bit DDR */
|
||||
writel(0xffff, regs + AR71XX_DDR_REG_RD_CYCLE);
|
||||
udelay(100);
|
||||
|
||||
/* Burst size */
|
||||
writel(DDR_BURST_VAL, regs + QCA953X_DDR_REG_BURST);
|
||||
udelay(100);
|
||||
writel(DDR_BURST2_VAL, regs + QCA953X_DDR_REG_BURST2);
|
||||
udelay(100);
|
||||
|
||||
/* AHB maximum timeout */
|
||||
writel(0xfffff, regs + QCA953X_DDR_REG_TIMEOUT_MAX);
|
||||
udelay(100);
|
||||
|
||||
/* DRAM timing */
|
||||
writel(DDR2_CONF_REG_VAL, regs + AR71XX_DDR_REG_CONFIG);
|
||||
udelay(100);
|
||||
writel(DDR2_CONF2_REG_VAL, regs + AR71XX_DDR_REG_CONFIG2);
|
||||
udelay(100);
|
||||
writel(DDR2_CONF3_REG_VAL, regs + QCA953X_DDR_REG_CONFIG3);
|
||||
udelay(100);
|
||||
|
||||
/* Enable DDR2 */
|
||||
writel(DDR2_CONF_VAL, regs + QCA953X_DDR_REG_DDR2_CONFIG);
|
||||
udelay(100);
|
||||
|
||||
/* Precharge All */
|
||||
writel(DDR_CTRL_PRECHARGE, regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(100);
|
||||
|
||||
/* Update Extended Mode Register 2 Set (EMR2S) */
|
||||
writel(DDR_CTRL_UPD_EMR2S, regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(100);
|
||||
|
||||
/* Update Extended Mode Register 3 Set (EMR3S) */
|
||||
writel(DDR_CTRL_UPD_EMR3S, regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(100);
|
||||
|
||||
/* 150 ohm, Reduced strength, Enable DLL */
|
||||
writel(DDR2_EXT_MODE_VAL, regs + AR71XX_DDR_REG_EMR);
|
||||
udelay(100);
|
||||
|
||||
/* Update Extended Mode Register Set (EMRS) */
|
||||
writel(DDR_CTRL_UPD_EMRS, regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(100);
|
||||
|
||||
/* Reset DLL, CAS Latency 4, Burst Length 8 */
|
||||
writel(DDR2_MODE_DLL_VAL, regs + AR71XX_DDR_REG_MODE);
|
||||
udelay(100);
|
||||
|
||||
/* Update Mode Register Set (MRS) */
|
||||
writel(DDR_CTRL_UPD_MRS, regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(100);
|
||||
|
||||
/* Precharge All */
|
||||
writel(DDR_CTRL_PRECHARGE, regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(100);
|
||||
|
||||
/* Auto Refresh */
|
||||
writel(DDR_CTRL_AUTO_REFRESH, regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(100);
|
||||
writel(DDR_CTRL_AUTO_REFRESH, regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(100);
|
||||
|
||||
/* Normal DLL, CAS Latency 4, Burst Length 8 */
|
||||
writel(DDR2_MODE_VAL, regs + AR71XX_DDR_REG_MODE);
|
||||
udelay(100);
|
||||
|
||||
/* Mode Register Set (MRS) */
|
||||
writel(DDR_CTRL_UPD_MRS, regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(100);
|
||||
|
||||
/* Enable OCD, Enable DLL, Reduced Drive Strength */
|
||||
writel(DDR2_EXT_MODE_OCD_VAL, regs + AR71XX_DDR_REG_EMR);
|
||||
udelay(100);
|
||||
|
||||
/* Update Extended Mode Register Set (EMRS) */
|
||||
writel(DDR_CTRL_UPD_EMRS, regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(100);
|
||||
|
||||
/* OCD diable, Enable DLL, Reduced Drive Strength */
|
||||
writel(DDR2_EXT_MODE_VAL, regs + AR71XX_DDR_REG_EMR);
|
||||
udelay(100);
|
||||
|
||||
/* Update Extended Mode Register Set (EMRS) */
|
||||
writel(DDR_CTRL_UPD_EMRS, regs + AR71XX_DDR_REG_CONTROL);
|
||||
udelay(100);
|
||||
|
||||
/* Refresh time control */
|
||||
writel(DDR_REFRESH_VAL, regs + AR71XX_DDR_REG_REFRESH);
|
||||
udelay(100);
|
||||
|
||||
/* DQS 0 Tap Control */
|
||||
writel(DDR2_TAP_VAL, regs + AR71XX_DDR_REG_TAP_CTRL0);
|
||||
|
||||
/* DQS 1 Tap Control */
|
||||
writel(DDR2_TAP_VAL, regs + AR71XX_DDR_REG_TAP_CTRL1);
|
||||
}
|
||||
}
|
||||
|
||||
void ddr_tap_tuning(void)
|
||||
{
|
||||
void __iomem *regs;
|
||||
u32 val, pass, tap, cnt, tap_val, last, first;
|
||||
|
||||
regs = map_physmem(AR71XX_DDR_CTRL_BASE, AR71XX_DDR_CTRL_SIZE,
|
||||
MAP_NOCACHE);
|
||||
|
||||
tap_val = readl(regs + AR71XX_DDR_REG_TAP_CTRL0);
|
||||
first = DDR_TAP_MAGIC_VAL;
|
||||
last = 0;
|
||||
cnt = 0;
|
||||
tap = 0;
|
||||
|
||||
do {
|
||||
writel(tap, regs + AR71XX_DDR_REG_TAP_CTRL0);
|
||||
writel(tap, regs + AR71XX_DDR_REG_TAP_CTRL1);
|
||||
|
||||
writel(DDR_BIST_COMP_CNT(8), regs + DDR_REG_BIST_COMP_ADDR_1);
|
||||
writel(DDR_BIST_MASK_ADDR_VAL, regs + DDR_REG_BIST_MASK_ADDR_0);
|
||||
writel(0xffff, regs + DDR_REG_BIST_COMP_AHB_GE0_1);
|
||||
writel(0xffff, regs + DDR_REG_BIST_COMP_AHB_GE1_0);
|
||||
writel(0xffff, regs + DDR_REG_BIST_COMP_AHB_GE1_1);
|
||||
writel(0xffff, regs + DDR_REG_BIST_MASK_AHB_GE0_0);
|
||||
writel(0xffff, regs + DDR_REG_BIST_MASK_AHB_GE0_1);
|
||||
writel(0xffff, regs + DDR_REG_BIST_MASK_AHB_GE1_0);
|
||||
writel(0xffff, regs + DDR_REG_BIST_MASK_AHB_GE1_1);
|
||||
writel(0xffff, regs + DDR_REG_BIST_COMP_AHB_GE0_0);
|
||||
|
||||
/* Start BIST test */
|
||||
writel(DDR_BIST_TEST_START, regs + DDR_REG_BIST);
|
||||
|
||||
do {
|
||||
val = readl(regs + DDR_REG_BIST_STATUS);
|
||||
} while (!(val & DDR_BIST_STATUS_DONE));
|
||||
|
||||
/* Stop BIST test */
|
||||
writel(0, regs + DDR_REG_BIST);
|
||||
|
||||
pass = val & DDR_BIST_COMP_CNT_MASK;
|
||||
pass ^= DDR_BIST_COMP_CNT(8);
|
||||
if (!pass) {
|
||||
if (first != DDR_TAP_MAGIC_VAL) {
|
||||
last = tap;
|
||||
} else {
|
||||
first = tap;
|
||||
last = tap;
|
||||
}
|
||||
cnt++;
|
||||
}
|
||||
tap++;
|
||||
} while (tap < DDR_TAP_MAX_VAL);
|
||||
|
||||
if (cnt) {
|
||||
tap_val = (first + last) / 2;
|
||||
tap_val %= DDR_TAP_MAX_VAL;
|
||||
}
|
||||
|
||||
writel(tap_val, regs + AR71XX_DDR_REG_TAP_CTRL0);
|
||||
writel(tap_val, regs + AR71XX_DDR_REG_TAP_CTRL1);
|
||||
}
|
||||
186
arch/mips/mach-ath79/qca953x/lowlevel_init.S
Normal file
186
arch/mips/mach-ath79/qca953x/lowlevel_init.S
Normal file
@ -0,0 +1,186 @@
|
||||
/*
|
||||
* Copyright (C) 2015-2016 Wills Wang <wills.wang@live.com>
|
||||
* Based on Atheros LSDK/QSDK
|
||||
*
|
||||
* SPDX-License-Identifier: GPL-2.0+
|
||||
*/
|
||||
|
||||
#include <config.h>
|
||||
#include <asm/asm.h>
|
||||
#include <asm/regdef.h>
|
||||
#include <asm/mipsregs.h>
|
||||
#include <asm/addrspace.h>
|
||||
#include <mach/ar71xx_regs.h>
|
||||
|
||||
#define MK_PLL_CONF(divint, refdiv, range, outdiv) \
|
||||
(((0x3F & divint) << 10) | \
|
||||
((0x1F & refdiv) << 16) | \
|
||||
((0x1 & range) << 21) | \
|
||||
((0x7 & outdiv) << 23) )
|
||||
|
||||
#define MK_CLK_CNTL(cpudiv, ddrdiv, ahbdiv) \
|
||||
(((0x3 & (cpudiv - 1)) << 5) | \
|
||||
((0x3 & (ddrdiv - 1)) << 10) | \
|
||||
((0x3 & (ahbdiv - 1)) << 15) )
|
||||
|
||||
#define SET_FIELD(name, v) (((v) & QCA953X_##name##_MASK) << \
|
||||
QCA953X_##name##_SHIFT)
|
||||
|
||||
#define DPLL2_KI(v) SET_FIELD(SRIF_DPLL2_KI, v)
|
||||
#define DPLL2_KD(v) SET_FIELD(SRIF_DPLL2_KD, v)
|
||||
#define DPLL2_PWD QCA953X_SRIF_DPLL2_PWD
|
||||
#define MK_DPLL2(ki, kd) (DPLL2_KI(ki) | DPLL2_KD(kd) | DPLL2_PWD)
|
||||
|
||||
#define PLL_CPU_NFRAC(v) SET_FIELD(PLL_CPU_CONFIG_NFRAC, v)
|
||||
#define PLL_CPU_NINT(v) SET_FIELD(PLL_CPU_CONFIG_NINT, v)
|
||||
#define PLL_CPU_REFDIV(v) SET_FIELD(PLL_CPU_CONFIG_REFDIV, v)
|
||||
#define PLL_CPU_OUTDIV(v) SET_FIELD(PLL_CPU_CONFIG_OUTDIV, v)
|
||||
#define MK_PLL_CPU_CONF(frac, nint, ref, outdiv) \
|
||||
(PLL_CPU_NFRAC(frac) | \
|
||||
PLL_CPU_NINT(nint) | \
|
||||
PLL_CPU_REFDIV(ref) | \
|
||||
PLL_CPU_OUTDIV(outdiv))
|
||||
|
||||
#define PLL_DDR_NFRAC(v) SET_FIELD(PLL_DDR_CONFIG_NFRAC, v)
|
||||
#define PLL_DDR_NINT(v) SET_FIELD(PLL_DDR_CONFIG_NINT, v)
|
||||
#define PLL_DDR_REFDIV(v) SET_FIELD(PLL_DDR_CONFIG_REFDIV, v)
|
||||
#define PLL_DDR_OUTDIV(v) SET_FIELD(PLL_DDR_CONFIG_OUTDIV, v)
|
||||
#define MK_PLL_DDR_CONF(frac, nint, ref, outdiv) \
|
||||
(PLL_DDR_NFRAC(frac) | \
|
||||
PLL_DDR_REFDIV(ref) | \
|
||||
PLL_DDR_NINT(nint) | \
|
||||
PLL_DDR_OUTDIV(outdiv) | \
|
||||
QCA953X_PLL_CONFIG_PWD)
|
||||
|
||||
#define PLL_CPU_CONF_VAL MK_PLL_CPU_CONF(0, 26, 1, 0)
|
||||
#define PLL_DDR_CONF_VAL MK_PLL_DDR_CONF(0, 15, 1, 0)
|
||||
|
||||
#define PLL_CLK_CTRL_PLL_BYPASS (QCA953X_PLL_CLK_CTRL_CPU_PLL_BYPASS | \
|
||||
QCA953X_PLL_CLK_CTRL_DDR_PLL_BYPASS | \
|
||||
QCA953X_PLL_CLK_CTRL_AHB_PLL_BYPASS)
|
||||
|
||||
#define PLL_CLK_CTRL_CPU_DIV(v) SET_FIELD(PLL_CLK_CTRL_CPU_POST_DIV, v)
|
||||
#define PLL_CLK_CTRL_DDR_DIV(v) SET_FIELD(PLL_CLK_CTRL_DDR_POST_DIV, v)
|
||||
#define PLL_CLK_CTRL_AHB_DIV(v) SET_FIELD(PLL_CLK_CTRL_AHB_POST_DIV, v)
|
||||
#define MK_PLL_CLK_CTRL(cpu, ddr, ahb) \
|
||||
(PLL_CLK_CTRL_CPU_DIV(cpu) | \
|
||||
PLL_CLK_CTRL_DDR_DIV(ddr) | \
|
||||
PLL_CLK_CTRL_AHB_DIV(ahb))
|
||||
#define PLL_CLK_CTRL_VAL (MK_PLL_CLK_CTRL(0, 0, 2) | \
|
||||
PLL_CLK_CTRL_PLL_BYPASS | \
|
||||
QCA953X_PLL_CLK_CTRL_CPUCLK_FROM_CPUPLL | \
|
||||
QCA953X_PLL_CLK_CTRL_DDRCLK_FROM_DDRPLL)
|
||||
|
||||
#define PLL_DDR_DIT_FRAC_MAX(v) SET_FIELD(PLL_DDR_DIT_FRAC_MAX, v)
|
||||
#define PLL_DDR_DIT_FRAC_MIN(v) SET_FIELD(PLL_DDR_DIT_FRAC_MIN, v)
|
||||
#define PLL_DDR_DIT_FRAC_STEP(v) SET_FIELD(PLL_DDR_DIT_FRAC_STEP, v)
|
||||
#define PLL_DDR_DIT_UPD_CNT(v) SET_FIELD(PLL_DDR_DIT_UPD_CNT, v)
|
||||
#define PLL_CPU_DIT_FRAC_MAX(v) SET_FIELD(PLL_CPU_DIT_FRAC_MAX, v)
|
||||
#define PLL_CPU_DIT_FRAC_MIN(v) SET_FIELD(PLL_CPU_DIT_FRAC_MIN, v)
|
||||
#define PLL_CPU_DIT_FRAC_STEP(v) SET_FIELD(PLL_CPU_DIT_FRAC_STEP, v)
|
||||
#define PLL_CPU_DIT_UPD_CNT(v) SET_FIELD(PLL_CPU_DIT_UPD_CNT, v)
|
||||
#define MK_PLL_DDR_DIT_FRAC(max, min, step, cnt) \
|
||||
(QCA953X_PLL_DIT_FRAC_EN | \
|
||||
PLL_DDR_DIT_FRAC_MAX(max) | \
|
||||
PLL_DDR_DIT_FRAC_MIN(min) | \
|
||||
PLL_DDR_DIT_FRAC_STEP(step) | \
|
||||
PLL_DDR_DIT_UPD_CNT(cnt))
|
||||
#define MK_PLL_CPU_DIT_FRAC(max, min, step, cnt) \
|
||||
(QCA953X_PLL_DIT_FRAC_EN | \
|
||||
PLL_CPU_DIT_FRAC_MAX(max) | \
|
||||
PLL_CPU_DIT_FRAC_MIN(min) | \
|
||||
PLL_CPU_DIT_FRAC_STEP(step) | \
|
||||
PLL_CPU_DIT_UPD_CNT(cnt))
|
||||
#define PLL_CPU_DIT_FRAC_VAL MK_PLL_CPU_DIT_FRAC(63, 0, 1, 15)
|
||||
#define PLL_DDR_DIT_FRAC_VAL MK_PLL_DDR_DIT_FRAC(763, 635, 1, 15)
|
||||
|
||||
.text
|
||||
.set noreorder
|
||||
|
||||
LEAF(lowlevel_init)
|
||||
/* RTC Reset */
|
||||
li t0, CKSEG1ADDR(AR71XX_RESET_BASE)
|
||||
lw t1, QCA953X_RESET_REG_RESET_MODULE(t0)
|
||||
li t2, 0x08000000
|
||||
or t1, t1, t2
|
||||
sw t1, QCA953X_RESET_REG_RESET_MODULE(t0)
|
||||
nop
|
||||
lw t1, QCA953X_RESET_REG_RESET_MODULE(t0)
|
||||
li t2, 0xf7ffffff
|
||||
and t1, t1, t2
|
||||
sw t1, QCA953X_RESET_REG_RESET_MODULE(t0)
|
||||
nop
|
||||
|
||||
/* RTC Force Wake */
|
||||
li t0, CKSEG1ADDR(QCA953X_RTC_BASE)
|
||||
li t1, 0x01
|
||||
sw t1, QCA953X_RTC_REG_SYNC_RESET(t0)
|
||||
nop
|
||||
nop
|
||||
|
||||
/* Wait for RTC in on state */
|
||||
1:
|
||||
lw t1, QCA953X_RTC_REG_SYNC_STATUS(t0)
|
||||
andi t1, t1, 0x02
|
||||
beqz t1, 1b
|
||||
nop
|
||||
|
||||
li t0, CKSEG1ADDR(QCA953X_SRIF_BASE)
|
||||
li t1, MK_DPLL2(2, 16)
|
||||
sw t1, QCA953X_SRIF_BB_DPLL2_REG(t0)
|
||||
sw t1, QCA953X_SRIF_PCIE_DPLL2_REG(t0)
|
||||
sw t1, QCA953X_SRIF_DDR_DPLL2_REG(t0)
|
||||
sw t1, QCA953X_SRIF_CPU_DPLL2_REG(t0)
|
||||
|
||||
li t0, CKSEG1ADDR(AR71XX_PLL_BASE)
|
||||
lw t1, QCA953X_PLL_CLK_CTRL_REG(t0)
|
||||
ori t1, PLL_CLK_CTRL_PLL_BYPASS
|
||||
sw t1, QCA953X_PLL_CLK_CTRL_REG(t0)
|
||||
nop
|
||||
|
||||
li t1, PLL_CPU_CONF_VAL
|
||||
sw t1, QCA953X_PLL_CPU_CONFIG_REG(t0)
|
||||
nop
|
||||
|
||||
li t1, PLL_DDR_CONF_VAL
|
||||
sw t1, QCA953X_PLL_DDR_CONFIG_REG(t0)
|
||||
nop
|
||||
|
||||
li t1, PLL_CLK_CTRL_VAL
|
||||
sw t1, QCA953X_PLL_CLK_CTRL_REG(t0)
|
||||
nop
|
||||
|
||||
lw t1, QCA953X_PLL_CPU_CONFIG_REG(t0)
|
||||
li t2, ~QCA953X_PLL_CONFIG_PWD
|
||||
and t1, t1, t2
|
||||
sw t1, QCA953X_PLL_CPU_CONFIG_REG(t0)
|
||||
nop
|
||||
|
||||
lw t1, QCA953X_PLL_DDR_CONFIG_REG(t0)
|
||||
li t2, ~QCA953X_PLL_CONFIG_PWD
|
||||
and t1, t1, t2
|
||||
sw t1, QCA953X_PLL_DDR_CONFIG_REG(t0)
|
||||
nop
|
||||
|
||||
lw t1, QCA953X_PLL_CLK_CTRL_REG(t0)
|
||||
li t2, ~PLL_CLK_CTRL_PLL_BYPASS
|
||||
and t1, t1, t2
|
||||
sw t1, QCA953X_PLL_CLK_CTRL_REG(t0)
|
||||
nop
|
||||
|
||||
li t1, PLL_DDR_DIT_FRAC_VAL
|
||||
sw t1, QCA953X_PLL_DDR_DIT_FRAC_REG(t0)
|
||||
nop
|
||||
|
||||
li t1, PLL_CPU_DIT_FRAC_VAL
|
||||
sw t1, QCA953X_PLL_CPU_DIT_FRAC_REG(t0)
|
||||
nop
|
||||
|
||||
li t0, CKSEG1ADDR(AR71XX_RESET_BASE)
|
||||
lui t1, 0x03fc
|
||||
sw t1, 0xb4(t0)
|
||||
|
||||
nop
|
||||
jr ra
|
||||
nop
|
||||
END(lowlevel_init)
|
||||
Loading…
Reference in New Issue
Block a user