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6da74c5416
Use pdata-quirks to provide platform data required for reset management during boot and shutdown of the wkup_m3 processor on both the AM33xx and AM43xx SoCs. The WkupM3 remote processor is used to implement and achieve low-power functionality on the AM33xx & AM43xx SoCs. Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Dave Gerlach <d-gerlach@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
426 lines
11 KiB
C
426 lines
11 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/davinci_emac.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/ti_wilink_st.h>
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#include <linux/platform_data/pinctrl-single.h>
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#include <linux/platform_data/iommu-omap.h>
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#include <linux/platform_data/wkup_m3.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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#include "omap_device.h"
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#include "omap-secure.h"
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#include "soc.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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struct of_dev_auxdata omap_auxdata_lookup[];
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static struct twl4030_gpio_platform_data twl_gpio_auxdata;
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#ifdef CONFIG_MACH_NOKIA_N8X0
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static void __init omap2420_n8x0_legacy_init(void)
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{
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omap_auxdata_lookup[0].platform_data = n8x0_legacy_init();
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}
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#else
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#define omap2420_n8x0_legacy_init NULL
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#endif
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#ifdef CONFIG_ARCH_OMAP3
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/*
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* Configures GPIOs 126, 127 and 129 to 1.8V mode instead of 3.0V
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* mode for MMC1 in case bootloader did not configure things.
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* Note that if the pins are used for MMC1, pbias-regulator
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* manages the IO voltage.
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*/
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static void __init omap3_gpio126_127_129(void)
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{
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u32 reg;
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reg = omap_ctrl_readl(OMAP343X_CONTROL_PBIAS_LITE);
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reg &= ~OMAP343X_PBIASLITEVMODE1;
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reg |= OMAP343X_PBIASLITEPWRDNZ1;
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omap_ctrl_writel(reg, OMAP343X_CONTROL_PBIAS_LITE);
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if (cpu_is_omap3630()) {
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reg = omap_ctrl_readl(OMAP34XX_CONTROL_WKUP_CTRL);
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reg |= OMAP36XX_GPIO_IO_PWRDNZ;
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omap_ctrl_writel(reg, OMAP34XX_CONTROL_WKUP_CTRL);
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}
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}
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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 struct iommu_platform_data omap3_iommu_pdata = {
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.reset_name = "mmu",
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.assert_reset = omap_device_assert_hardreset,
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.deassert_reset = omap_device_deassert_hardreset,
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};
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static int omap3_sbc_t3730_twl_callback(struct device *dev,
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unsigned gpio,
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unsigned ngpio)
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{
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int res;
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res = gpio_request_one(gpio + 2, GPIOF_OUT_INIT_HIGH,
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"wlan pwr");
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if (res)
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return res;
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gpio_export(gpio, 0);
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return 0;
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}
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static void __init omap3_sbc_t3x_usb_hub_init(int gpio, char *hub_name)
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{
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int err = gpio_request_one(gpio, GPIOF_OUT_INIT_LOW, hub_name);
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if (err) {
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pr_err("SBC-T3x: %s reset gpio request failed: %d\n",
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hub_name, err);
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return;
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}
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gpio_export(gpio, 0);
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udelay(10);
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gpio_set_value(gpio, 1);
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msleep(1);
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}
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static void __init omap3_sbc_t3730_twl_init(void)
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{
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twl_gpio_auxdata.setup = omap3_sbc_t3730_twl_callback;
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}
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static void __init omap3_sbc_t3730_legacy_init(void)
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{
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omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
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}
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static void __init omap3_sbc_t3530_legacy_init(void)
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{
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omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
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}
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struct ti_st_plat_data wilink_pdata = {
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.nshutdown_gpio = 137,
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.dev_name = "/dev/ttyO1",
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.flow_cntrl = 1,
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.baud_rate = 300000,
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};
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static struct platform_device wl18xx_device = {
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.name = "kim",
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.id = -1,
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.dev = {
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.platform_data = &wilink_pdata,
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}
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};
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static struct platform_device btwilink_device = {
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.name = "btwilink",
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.id = -1,
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};
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static void __init omap3_igep0020_rev_f_legacy_init(void)
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{
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platform_device_register(&wl18xx_device);
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platform_device_register(&btwilink_device);
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}
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static void __init omap3_igep0030_rev_g_legacy_init(void)
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{
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platform_device_register(&wl18xx_device);
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platform_device_register(&btwilink_device);
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}
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static void __init omap3_evm_legacy_init(void)
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{
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hsmmc2_internal_input_clk();
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}
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static void am35xx_enable_emac_int(void)
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{
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u32 v;
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v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
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v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR |
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AM35XX_CPGMAC_C0_MISC_PULSE_CLR | AM35XX_CPGMAC_C0_RX_THRESH_CLR);
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omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
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omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
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}
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static void am35xx_disable_emac_int(void)
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{
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u32 v;
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v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
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v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR);
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omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
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omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
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}
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static struct emac_platform_data am35xx_emac_pdata = {
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.interrupt_enable = am35xx_enable_emac_int,
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.interrupt_disable = am35xx_disable_emac_int,
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};
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static void __init am35xx_emac_reset(void)
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{
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u32 v;
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v = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
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v &= ~AM35XX_CPGMACSS_SW_RST;
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omap_ctrl_writel(v, AM35XX_CONTROL_IP_SW_RESET);
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omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); /* OCP barrier */
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}
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static struct gpio cm_t3517_wlan_gpios[] __initdata = {
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{ 56, GPIOF_OUT_INIT_HIGH, "wlan pwr" },
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{ 4, GPIOF_OUT_INIT_HIGH, "xcvr noe" },
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};
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static void __init omap3_sbc_t3517_wifi_init(void)
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{
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int err = gpio_request_array(cm_t3517_wlan_gpios,
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ARRAY_SIZE(cm_t3517_wlan_gpios));
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if (err) {
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pr_err("SBC-T3517: wl12xx gpios request failed: %d\n", err);
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return;
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}
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gpio_export(cm_t3517_wlan_gpios[0].gpio, 0);
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gpio_export(cm_t3517_wlan_gpios[1].gpio, 0);
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msleep(100);
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gpio_set_value(cm_t3517_wlan_gpios[1].gpio, 0);
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}
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static void __init omap3_sbc_t3517_legacy_init(void)
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{
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omap3_sbc_t3x_usb_hub_init(152, "cm-t3517 usb hub");
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omap3_sbc_t3x_usb_hub_init(98, "sb-t35 usb hub");
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am35xx_emac_reset();
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hsmmc2_internal_input_clk();
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omap3_sbc_t3517_wifi_init();
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}
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static void __init am3517_evm_legacy_init(void)
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{
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am35xx_emac_reset();
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}
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static struct platform_device omap3_rom_rng_device = {
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.name = "omap3-rom-rng",
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.id = -1,
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.dev = {
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.platform_data = rx51_secure_rng_call,
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},
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};
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static void __init nokia_n900_legacy_init(void)
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{
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hsmmc2_internal_input_clk();
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if (omap_type() == OMAP2_DEVICE_TYPE_SEC) {
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if (IS_ENABLED(CONFIG_ARM_ERRATA_430973)) {
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pr_info("RX-51: Enabling ARM errata 430973 workaround\n");
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/* set IBE to 1 */
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rx51_secure_update_aux_cr(BIT(6), 0);
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} else {
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pr_warn("RX-51: Not enabling ARM errata 430973 workaround\n");
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pr_warn("Thumb binaries may crash randomly without this workaround\n");
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}
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pr_info("RX-51: Registring OMAP3 HWRNG device\n");
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platform_device_register(&omap3_rom_rng_device);
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}
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}
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static void __init omap3_tao3530_legacy_init(void)
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{
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hsmmc2_internal_input_clk();
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}
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#endif /* CONFIG_ARCH_OMAP3 */
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#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
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static struct iommu_platform_data omap4_iommu_pdata = {
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.reset_name = "mmu_cache",
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.assert_reset = omap_device_assert_hardreset,
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.deassert_reset = omap_device_deassert_hardreset,
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};
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#endif
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#if defined(CONFIG_SOC_AM33XX) || defined(CONFIG_SOC_AM43XX)
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static struct wkup_m3_platform_data wkup_m3_data = {
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.reset_name = "wkup_m3",
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.assert_reset = omap_device_assert_hardreset,
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.deassert_reset = omap_device_deassert_hardreset,
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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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}
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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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/*
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* GPIOs for TWL are initialized by the I2C bus and need custom
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* handing until DSS has device tree bindings.
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*/
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void omap_auxdata_legacy_init(struct device *dev)
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{
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if (dev->platform_data)
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return;
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if (strcmp("twl4030-gpio", dev_name(dev)))
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return;
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dev->platform_data = &twl_gpio_auxdata;
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}
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/*
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* Few boards still need auxdata populated before we populate
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* the dev entries in of_platform_populate().
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*/
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static struct pdata_init auxdata_quirks[] __initdata = {
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#ifdef CONFIG_SOC_OMAP2420
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{ "nokia,n800", omap2420_n8x0_legacy_init, },
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{ "nokia,n810", omap2420_n8x0_legacy_init, },
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{ "nokia,n810-wimax", omap2420_n8x0_legacy_init, },
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#endif
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#ifdef CONFIG_ARCH_OMAP3
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{ "compulab,omap3-sbc-t3730", omap3_sbc_t3730_twl_init, },
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#endif
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{ /* sentinel */ },
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};
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struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
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#ifdef CONFIG_MACH_NOKIA_N8X0
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OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL),
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OF_DEV_AUXDATA("menelaus", 0x72, "1-0072", &n8x0_menelaus_platform_data),
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OF_DEV_AUXDATA("tlv320aic3x", 0x18, "2-0018", &n810_aic33_data),
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#endif
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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", 0x480025a0, "480025a0.pinmux", &pcs_pdata),
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OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002a00, "48002a00.pinmux", &pcs_pdata),
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OF_DEV_AUXDATA("ti,omap2-iommu", 0x5d000000, "5d000000.mmu",
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&omap3_iommu_pdata),
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/* Only on am3517 */
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OF_DEV_AUXDATA("ti,davinci_mdio", 0x5c030000, "davinci_mdio.0", NULL),
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OF_DEV_AUXDATA("ti,am3517-emac", 0x5c000000, "davinci_emac.0",
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&am35xx_emac_pdata),
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#endif
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#ifdef CONFIG_SOC_AM33XX
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OF_DEV_AUXDATA("ti,am3352-wkup-m3", 0x44d00000, "44d00000.wkup_m3",
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&wkup_m3_data),
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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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#ifdef CONFIG_SOC_OMAP5
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OF_DEV_AUXDATA("ti,omap5-padconf", 0x4a002840, "4a002840.pinmux", &pcs_pdata),
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OF_DEV_AUXDATA("ti,omap5-padconf", 0x4ae0c840, "4ae0c840.pinmux", &pcs_pdata),
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#endif
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#ifdef CONFIG_SOC_DRA7XX
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OF_DEV_AUXDATA("ti,dra7-padconf", 0x4a003400, "4a003400.pinmux", &pcs_pdata),
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#endif
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#ifdef CONFIG_SOC_AM43XX
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OF_DEV_AUXDATA("ti,am437-padconf", 0x44e10800, "44e10800.pinmux", &pcs_pdata),
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OF_DEV_AUXDATA("ti,am4372-wkup-m3", 0x44d00000, "44d00000.wkup_m3",
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&wkup_m3_data),
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#endif
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#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
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OF_DEV_AUXDATA("ti,omap4-iommu", 0x4a066000, "4a066000.mmu",
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&omap4_iommu_pdata),
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OF_DEV_AUXDATA("ti,omap4-iommu", 0x55082000, "55082000.mmu",
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&omap4_iommu_pdata),
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#endif
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{ /* sentinel */ },
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};
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/*
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* Few boards still need to initialize some legacy devices with
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* platform data until the drivers support device tree.
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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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{ "compulab,omap3-sbc-t3517", omap3_sbc_t3517_legacy_init, },
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{ "compulab,omap3-sbc-t3530", omap3_sbc_t3530_legacy_init, },
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{ "compulab,omap3-sbc-t3730", omap3_sbc_t3730_legacy_init, },
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{ "nokia,omap3-n900", nokia_n900_legacy_init, },
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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-rev-f", omap3_igep0020_rev_f_legacy_init, },
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{ "isee,omap3-igep0030-rev-g", omap3_igep0030_rev_g_legacy_init, },
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{ "logicpd,dm3730-torpedo-devkit", omap3_gpio126_127_129, },
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{ "ti,omap3-evm-37xx", omap3_evm_legacy_init, },
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{ "ti,am3517-evm", am3517_evm_legacy_init, },
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{ "technexion,omap3-tao3530", omap3_tao3530_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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static void pdata_quirks_check(struct pdata_init *quirks)
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{
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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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void __init pdata_quirks_init(const struct of_device_id *omap_dt_match_table)
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{
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omap_sdrc_init(NULL, NULL);
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pdata_quirks_check(auxdata_quirks);
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of_platform_populate(NULL, omap_dt_match_table,
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omap_auxdata_lookup, NULL);
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pdata_quirks_check(pdata_quirks);
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}
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