diff options
Diffstat (limited to 'arch/arm/mach-mxs/mach-mxs.c')
| -rw-r--r-- | arch/arm/mach-mxs/mach-mxs.c | 226 |
1 files changed, 100 insertions, 126 deletions
diff --git a/arch/arm/mach-mxs/mach-mxs.c b/arch/arm/mach-mxs/mach-mxs.c index 4ce27b536dc9..6e017fa306c8 100644 --- a/arch/arm/mach-mxs/mach-mxs.c +++ b/arch/arm/mach-mxs/mach-mxs.c @@ -1,34 +1,26 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright 2012 Freescale Semiconductor, Inc. * Copyright 2012 Linaro Ltd. - * - * The code contained herein is licensed under the GNU General Public - * License. You may obtain a copy of the GNU General Public License - * Version 2 or later at the following locations: - * - * http://www.opensource.org/licenses/gpl-license.html - * http://www.gnu.org/copyleft/gpl.html */ #include <linux/clk.h> #include <linux/clk/mxs.h> #include <linux/clkdev.h> -#include <linux/clocksource.h> #include <linux/delay.h> #include <linux/err.h> #include <linux/gpio.h> #include <linux/init.h> -#include <linux/irqchip/mxs.h> #include <linux/reboot.h> #include <linux/micrel_phy.h> #include <linux/of_address.h> #include <linux/of_platform.h> #include <linux/phy.h> -#include <linux/pinctrl/consumer.h> #include <linux/sys_soc.h> #include <asm/mach/arch.h> #include <asm/mach/map.h> #include <asm/mach/time.h> +#include <asm/system_info.h> #include <asm/system_misc.h> #include "pm.h" @@ -58,9 +50,14 @@ #define MXS_CLR_ADDR 0x8 #define MXS_TOG_ADDR 0xc +#define HW_OCOTP_OPS2 19 /* offset 0x150 */ +#define HW_OCOTP_OPS3 20 /* offset 0x160 */ + static u32 chipid; static u32 socid; +static void __iomem *reset_addr; + static inline void __mxs_setl(u32 mask, void __iomem *reg) { __raw_writel(mask, reg + MXS_SET_ADDR); @@ -156,6 +153,8 @@ enum mac_oui { OUI_FSL, OUI_DENX, OUI_CRYSTALFONTZ, + OUI_I2SE, + OUI_ARMADEUS, }; static void __init update_fec_mac_prop(enum mac_oui oui) @@ -174,7 +173,7 @@ static void __init update_fec_mac_prop(enum mac_oui oui) from = np; - if (of_get_property(np, "local-mac-address", NULL)) + if (of_property_present(np, "local-mac-address")) continue; newmac = kzalloc(sizeof(*newmac) + 6, GFP_KERNEL); @@ -210,6 +209,16 @@ static void __init update_fec_mac_prop(enum mac_oui oui) macaddr[1] = 0xb9; macaddr[2] = 0xe1; break; + case OUI_I2SE: + macaddr[0] = 0x00; + macaddr[1] = 0x01; + macaddr[2] = 0x87; + break; + case OUI_ARMADEUS: + macaddr[0] = 0x00; + macaddr[1] = 0x1e; + macaddr[2] = 0xac; + break; } val = ocotp[i]; macaddr[3] = (val >> 16) & 0xff; @@ -235,6 +244,11 @@ static void __init imx28_evk_init(void) mxs_saif_clkmux_select(MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0); } +static void __init imx28_apf28_init(void) +{ + update_fec_mac_prop(OUI_ARMADEUS); +} + static int apx4devkit_phy_fixup(struct phy_device *phy) { phy->dev_flags |= MICREL_PHY_50MHZ_CLK; @@ -250,83 +264,19 @@ static void __init apx4devkit_init(void) apx4devkit_phy_fixup); } -#define ENET0_MDC__GPIO_4_0 MXS_GPIO_NR(4, 0) -#define ENET0_MDIO__GPIO_4_1 MXS_GPIO_NR(4, 1) -#define ENET0_RX_EN__GPIO_4_2 MXS_GPIO_NR(4, 2) -#define ENET0_RXD0__GPIO_4_3 MXS_GPIO_NR(4, 3) -#define ENET0_RXD1__GPIO_4_4 MXS_GPIO_NR(4, 4) -#define ENET0_TX_EN__GPIO_4_6 MXS_GPIO_NR(4, 6) -#define ENET0_TXD0__GPIO_4_7 MXS_GPIO_NR(4, 7) -#define ENET0_TXD1__GPIO_4_8 MXS_GPIO_NR(4, 8) -#define ENET_CLK__GPIO_4_16 MXS_GPIO_NR(4, 16) - -#define TX28_FEC_PHY_POWER MXS_GPIO_NR(3, 29) -#define TX28_FEC_PHY_RESET MXS_GPIO_NR(4, 13) -#define TX28_FEC_nINT MXS_GPIO_NR(4, 5) - -static const struct gpio tx28_gpios[] __initconst = { - { ENET0_MDC__GPIO_4_0, GPIOF_OUT_INIT_LOW, "GPIO_4_0" }, - { ENET0_MDIO__GPIO_4_1, GPIOF_OUT_INIT_LOW, "GPIO_4_1" }, - { ENET0_RX_EN__GPIO_4_2, GPIOF_OUT_INIT_LOW, "GPIO_4_2" }, - { ENET0_RXD0__GPIO_4_3, GPIOF_OUT_INIT_LOW, "GPIO_4_3" }, - { ENET0_RXD1__GPIO_4_4, GPIOF_OUT_INIT_LOW, "GPIO_4_4" }, - { ENET0_TX_EN__GPIO_4_6, GPIOF_OUT_INIT_LOW, "GPIO_4_6" }, - { ENET0_TXD0__GPIO_4_7, GPIOF_OUT_INIT_LOW, "GPIO_4_7" }, - { ENET0_TXD1__GPIO_4_8, GPIOF_OUT_INIT_LOW, "GPIO_4_8" }, - { ENET_CLK__GPIO_4_16, GPIOF_OUT_INIT_LOW, "GPIO_4_16" }, - { TX28_FEC_PHY_POWER, GPIOF_OUT_INIT_LOW, "fec-phy-power" }, - { TX28_FEC_PHY_RESET, GPIOF_OUT_INIT_LOW, "fec-phy-reset" }, - { TX28_FEC_nINT, GPIOF_DIR_IN, "fec-int" }, -}; - -static void __init tx28_post_init(void) +static void __init crystalfontz_init(void) { - struct device_node *np; - struct platform_device *pdev; - struct pinctrl *pctl; - int ret; - - enable_clk_enet_out(); - - np = of_find_compatible_node(NULL, NULL, "fsl,imx28-fec"); - pdev = of_find_device_by_node(np); - if (!pdev) { - pr_err("%s: failed to find fec device\n", __func__); - return; - } - - pctl = pinctrl_get_select(&pdev->dev, "gpio_mode"); - if (IS_ERR(pctl)) { - pr_err("%s: failed to get pinctrl state\n", __func__); - return; - } - - ret = gpio_request_array(tx28_gpios, ARRAY_SIZE(tx28_gpios)); - if (ret) { - pr_err("%s: failed to request gpios: %d\n", __func__, ret); - return; - } - - /* Power up fec phy */ - gpio_set_value(TX28_FEC_PHY_POWER, 1); - msleep(26); /* 25ms according to data sheet */ - - /* Mode strap pins */ - gpio_set_value(ENET0_RX_EN__GPIO_4_2, 1); - gpio_set_value(ENET0_RXD0__GPIO_4_3, 1); - gpio_set_value(ENET0_RXD1__GPIO_4_4, 1); - - udelay(100); /* minimum assertion time for nRST */ - - /* Deasserting FEC PHY RESET */ - gpio_set_value(TX28_FEC_PHY_RESET, 1); + update_fec_mac_prop(OUI_CRYSTALFONTZ); +} - pinctrl_put(pctl); +static void __init duckbill_init(void) +{ + update_fec_mac_prop(OUI_I2SE); } -static void __init crystalfontz_init(void) +static void __init m28cu3_init(void) { - update_fec_mac_prop(OUI_CRYSTALFONTZ); + update_fec_mac_prop(OUI_DENX); } static const char __init *mxs_get_soc_id(void) @@ -393,18 +343,48 @@ static const char __init *mxs_get_revision(void) u32 rev = mxs_get_cpu_rev(); if (rev != MXS_CHIP_REV_UNKNOWN) - return kasprintf(GFP_KERNEL, "TO%d.%d", (rev >> 4) & 0xf, + return kasprintf(GFP_KERNEL, "%d.%d", (rev >> 4) & 0xf, rev & 0xf); else return kasprintf(GFP_KERNEL, "%s", "Unknown"); } +#define MX23_CLKCTRL_RESET_OFFSET 0x120 +#define MX28_CLKCTRL_RESET_OFFSET 0x1e0 + +static int __init mxs_restart_init(void) +{ + struct device_node *np; + + np = of_find_compatible_node(NULL, NULL, "fsl,imx23-clkctrl"); + if (!np) + np = of_find_compatible_node(NULL, NULL, "fsl,imx28-clkctrl"); + reset_addr = of_iomap(np, 0); + if (!reset_addr) + return -ENODEV; + + if (of_device_is_compatible(np, "fsl,imx23-clkctrl")) + reset_addr += MX23_CLKCTRL_RESET_OFFSET; + else + reset_addr += MX28_CLKCTRL_RESET_OFFSET; + of_node_put(np); + + return 0; +} + +static void __init eukrea_mbmx283lc_init(void) +{ + mxs_saif_clkmux_select(MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0); +} + static void __init mxs_machine_init(void) { struct device_node *root; struct device *parent; struct soc_device *soc_dev; struct soc_device_attribute *soc_dev_attr; + u64 soc_uid = 0; + const u32 *ocotp = mxs_get_ocotp(); int ret; soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); @@ -413,15 +393,30 @@ static void __init mxs_machine_init(void) root = of_find_node_by_path("/"); ret = of_property_read_string(root, "model", &soc_dev_attr->machine); - if (ret) + if (ret) { + kfree(soc_dev_attr); return; + } soc_dev_attr->family = "Freescale MXS Family"; soc_dev_attr->soc_id = mxs_get_soc_id(); soc_dev_attr->revision = mxs_get_revision(); + if (socid == HW_DIGCTL_CHIPID_MX23) { + soc_uid = system_serial_low = ocotp[HW_OCOTP_OPS3]; + } else if (socid == HW_DIGCTL_CHIPID_MX28) { + soc_uid = system_serial_high = ocotp[HW_OCOTP_OPS2]; + soc_uid <<= 32; + system_serial_low = ocotp[HW_OCOTP_OPS3]; + soc_uid |= system_serial_low; + } + + if (soc_uid) + soc_dev_attr->serial_number = kasprintf(GFP_KERNEL, "%016llX", soc_uid); + soc_dev = soc_device_register(soc_dev_attr); if (IS_ERR(soc_dev)) { + kfree(soc_dev_attr->serial_number); kfree(soc_dev_attr->revision); kfree(soc_dev_attr); return; @@ -431,23 +426,25 @@ static void __init mxs_machine_init(void) if (of_machine_is_compatible("fsl,imx28-evk")) imx28_evk_init(); + if (of_machine_is_compatible("armadeus,imx28-apf28")) + imx28_apf28_init(); else if (of_machine_is_compatible("bluegiga,apx4devkit")) apx4devkit_init(); - else if (of_machine_is_compatible("crystalfontz,cfa10037") || - of_machine_is_compatible("crystalfontz,cfa10049") || - of_machine_is_compatible("crystalfontz,cfa10055") || - of_machine_is_compatible("crystalfontz,cfa10057")) + else if (of_machine_is_compatible("crystalfontz,cfa10036")) crystalfontz_init(); + else if (of_machine_is_compatible("eukrea,mbmx283lc")) + eukrea_mbmx283lc_init(); + else if (of_machine_is_compatible("i2se,duckbill") || + of_machine_is_compatible("i2se,duckbill-2")) + duckbill_init(); + else if (of_machine_is_compatible("msr,m28cu3")) + m28cu3_init(); - of_platform_populate(NULL, of_default_bus_match_table, - NULL, parent); + of_platform_default_populate(NULL, NULL, parent); - if (of_machine_is_compatible("karo,tx28")) - tx28_post_init(); + mxs_restart_init(); } -#define MX23_CLKCTRL_RESET_OFFSET 0x120 -#define MX28_CLKCTRL_RESET_OFFSET 0x1e0 #define MXS_CLKCTRL_RESET_CHIP (1 << 1) /* @@ -455,50 +452,27 @@ static void __init mxs_machine_init(void) */ static void mxs_restart(enum reboot_mode mode, const char *cmd) { - struct device_node *np; - void __iomem *reset_addr; - - np = of_find_compatible_node(NULL, NULL, "fsl,clkctrl"); - reset_addr = of_iomap(np, 0); - if (!reset_addr) - goto soft; - - if (of_device_is_compatible(np, "fsl,imx23-clkctrl")) - reset_addr += MX23_CLKCTRL_RESET_OFFSET; - else - reset_addr += MX28_CLKCTRL_RESET_OFFSET; - - /* reset the chip */ - __mxs_setl(MXS_CLKCTRL_RESET_CHIP, reset_addr); + if (reset_addr) { + /* reset the chip */ + __mxs_setl(MXS_CLKCTRL_RESET_CHIP, reset_addr); - pr_err("Failed to assert the chip reset\n"); + pr_err("Failed to assert the chip reset\n"); - /* Delay to allow the serial port to show the message */ - mdelay(50); + /* Delay to allow the serial port to show the message */ + mdelay(50); + } -soft: /* We'll take a jump through zero as a poor second */ soft_restart(0); } -static void __init mxs_timer_init(void) -{ - if (of_machine_is_compatible("fsl,imx23")) - mx23_clocks_init(); - else - mx28_clocks_init(); - clocksource_of_init(); -} - -static const char *mxs_dt_compat[] __initdata = { +static const char *const mxs_dt_compat[] __initconst = { "fsl,imx28", "fsl,imx23", NULL, }; DT_MACHINE_START(MXS, "Freescale MXS (Device Tree)") - .handle_irq = icoll_handle_irq, - .init_time = mxs_timer_init, .init_machine = mxs_machine_init, .init_late = mxs_pm_init, .dt_compat = mxs_dt_compat, |