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https://github.com/edk2-porting/linux-next.git
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edd5eb4e99
Looks like we need to configure the regulators and use the pdata quirk to make eMMC work with device tree. It seems that mostly vaux3 is used, and only some earlier revisions used vmmc2. This has been tested to work on devices where the system_rev passed by the bootloader has versions 0x0010, 0x2101 and 0x2204. Cc: devicetree@vger.kernel.org Cc: Pavel Machek <pavel@ucw.cz> Cc: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Sebastian Reichel <sre@debian.org> [tony@atomide.com: updated with pinctrl changes and comments from Sebastian] Signed-off-by: Tony Lindgren <tony@atomide.com>
176 lines
4.1 KiB
C
176 lines
4.1 KiB
C
/*
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* Legacy platform_data quirks
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*
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* Copyright (C) 2013 Texas Instruments
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/clk.h>
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#include <linux/gpio.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/of_platform.h>
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#include <linux/wl12xx.h>
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#include <linux/platform_data/pinctrl-single.h>
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#include "common.h"
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#include "common-board-devices.h"
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#include "dss-common.h"
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#include "control.h"
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struct pdata_init {
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const char *compatible;
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void (*fn)(void);
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};
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/*
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* Create alias for USB host PHY clock.
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* Remove this when clock phandle can be provided via DT
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*/
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static void __init __used legacy_init_ehci_clk(char *clkname)
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{
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int ret;
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ret = clk_add_alias("main_clk", NULL, clkname, NULL);
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if (ret)
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pr_err("%s:Failed to add main_clk alias to %s :%d\n",
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__func__, clkname, ret);
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}
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#if IS_ENABLED(CONFIG_WL12XX)
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static struct wl12xx_platform_data wl12xx __initdata;
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static void __init __used legacy_init_wl12xx(unsigned ref_clock,
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unsigned tcxo_clock,
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int gpio)
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{
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int res;
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wl12xx.board_ref_clock = ref_clock;
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wl12xx.board_tcxo_clock = tcxo_clock;
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wl12xx.irq = gpio_to_irq(gpio);
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res = wl12xx_set_platform_data(&wl12xx);
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if (res) {
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pr_err("error setting wl12xx data: %d\n", res);
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return;
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}
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}
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#else
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static inline void legacy_init_wl12xx(unsigned ref_clock,
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unsigned tcxo_clock,
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int gpio)
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{
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}
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#endif
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#ifdef CONFIG_ARCH_OMAP3
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static void __init hsmmc2_internal_input_clk(void)
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{
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u32 reg;
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reg = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
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reg |= OMAP2_MMCSDIO2ADPCLKISEL;
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omap_ctrl_writel(reg, OMAP343X_CONTROL_DEVCONF1);
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}
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static void __init omap3_igep0020_legacy_init(void)
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{
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omap3_igep2_display_init_of();
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}
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static void __init omap3_evm_legacy_init(void)
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{
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legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 149);
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}
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static void __init omap3_zoom_legacy_init(void)
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{
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legacy_init_wl12xx(WL12XX_REFCLOCK_26, 0, 162);
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}
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#endif /* CONFIG_ARCH_OMAP3 */
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#ifdef CONFIG_ARCH_OMAP4
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static void __init omap4_sdp_legacy_init(void)
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{
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omap_4430sdp_display_init_of();
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legacy_init_wl12xx(WL12XX_REFCLOCK_26,
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WL12XX_TCXOCLOCK_26, 53);
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}
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static void __init omap4_panda_legacy_init(void)
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{
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omap4_panda_display_init_of();
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legacy_init_ehci_clk("auxclk3_ck");
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legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 53);
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}
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#endif
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#ifdef CONFIG_SOC_OMAP5
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static void __init omap5_uevm_legacy_init(void)
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{
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legacy_init_ehci_clk("auxclk1_ck");
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}
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#endif
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static struct pcs_pdata pcs_pdata;
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void omap_pcs_legacy_init(int irq, void (*rearm)(void))
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{
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pcs_pdata.irq = irq;
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pcs_pdata.rearm = rearm;
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}
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struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
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#ifdef CONFIG_ARCH_OMAP3
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OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002030, "48002030.pinmux", &pcs_pdata),
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OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002a00, "48002a00.pinmux", &pcs_pdata),
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#endif
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#ifdef CONFIG_ARCH_OMAP4
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OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a100040, "4a100040.pinmux", &pcs_pdata),
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OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a31e040, "4a31e040.pinmux", &pcs_pdata),
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#endif
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{ /* sentinel */ },
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};
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static struct pdata_init pdata_quirks[] __initdata = {
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#ifdef CONFIG_ARCH_OMAP3
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{ "nokia,omap3-n900", hsmmc2_internal_input_clk, },
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{ "nokia,omap3-n9", hsmmc2_internal_input_clk, },
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{ "nokia,omap3-n950", hsmmc2_internal_input_clk, },
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{ "isee,omap3-igep0020", omap3_igep0020_legacy_init, },
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{ "ti,omap3-evm-37xx", omap3_evm_legacy_init, },
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{ "ti,omap3-zoom3", omap3_zoom_legacy_init, },
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#endif
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#ifdef CONFIG_ARCH_OMAP4
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{ "ti,omap4-sdp", omap4_sdp_legacy_init, },
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{ "ti,omap4-panda", omap4_panda_legacy_init, },
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#endif
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#ifdef CONFIG_SOC_OMAP5
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{ "ti,omap5-uevm", omap5_uevm_legacy_init, },
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#endif
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{ /* sentinel */ },
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};
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void __init pdata_quirks_init(struct of_device_id *omap_dt_match_table)
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{
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struct pdata_init *quirks = pdata_quirks;
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omap_sdrc_init(NULL, NULL);
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of_platform_populate(NULL, omap_dt_match_table,
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omap_auxdata_lookup, NULL);
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while (quirks->compatible) {
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if (of_machine_is_compatible(quirks->compatible)) {
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if (quirks->fn)
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quirks->fn();
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break;
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}
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quirks++;
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}
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}
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