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sunxi_nand_spl: Use SYS_NAND_SELF_INIT and only do nand init when necessary

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Use SYS_NAND_SELF_INIT and only setup the pinmux and clocks when we are
actually using the nand.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
This commit is contained in:
Hans de Goede 2015-08-15 11:55:26 +02:00
parent 9da5fca55c
commit f62bfa56da
3 changed files with 10 additions and 5 deletions
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12
board/sunxi/board.c
View File

@ -31,6 +31,7 @@
#include <asm/arch/usb_phy.h>
#include <asm/gpio.h>
#include <asm/io.h>
#include <nand.h>
#include <net.h>
#if defined CONFIG_VIDEO_LCD_PANEL_I2C && !(defined CONFIG_SPL_BUILD)
@ -127,6 +128,12 @@ static void nand_clock_setup(void)
setbits_le32(&ccm->ahb_gate0, (CLK_GATE_OPEN << AHB_GATE_OFFSET_NAND0));
setbits_le32(&ccm->nand0_clk_cfg, CCM_NAND_CTRL_ENABLE | AHB_DIV_1);
}
void board_nand_init(void)
{
nand_pinmux_setup();
nand_clock_setup();
}
#endif
#ifdef CONFIG_GENERIC_MMC
@ -453,11 +460,6 @@ void sunxi_board_init(void)
power_failed |= axp221_set_eldo(3, CONFIG_AXP221_ELDO3_VOLT);
#endif
#ifdef CONFIG_SPL_NAND_SUNXI
nand_pinmux_setup();
nand_clock_setup();
#endif
printf("DRAM:");
ramsize = sunxi_dram_init();
printf(" %lu MiB\n", ramsize >> 20);

1
drivers/mtd/nand/Kconfig
View File

@ -95,6 +95,7 @@ config SPL_NAND_DENALI
config SPL_NAND_SUNXI
bool "Support for NAND on Allwinner A20 in SPL"
depends on MACH_SUN7I
select SYS_NAND_SELF_INIT
---help---
Enable support for NAND. This option allows SPL to read from
sunxi NAND using DMA transfers.

2
drivers/mtd/nand/sunxi_nand_spl.c
View File

@ -153,6 +153,8 @@ void nand_init(void)
{
uint32_t val;
board_nand_init();
val = readl(SUNXI_NFC_BASE + NFC_CTL);
/* enable and reset CTL */
writel(val | NFC_CTL_EN | NFC_CTL_RESET,