[PATCH V3 2/2] mcx: support for HTKW mcx board
Ilya Yanok
yanok at emcraft.com
Thu Dec 22 02:53:50 EST 2011
Support for the HTKW mcx board (TI AM3517 based) including serial,
Ethernet, I2C, USB host, HSMMC, DSS and RTC.
Signed-off-by: Ilya Yanok <yanok at emcraft.com>
---
Requires updated machine-type file, recently posted AM35xx-EMAC patch
and "Disable PM init on AM35{05,17} patch.
Changes from V2:
- Rebased onto the current linux-omap/master
- Added "common.h" include
- Added .handle_irq field to machine description
- Added omap_sdrc_init() call
- Removed unneeded pullup from output pins
- Moved pin muxing before GPIO accesses
- Removed .ocr_mask field (it's overwritten anyway)
- Moved touchscreen init out of I2C init
- some readability improvements (empty lines, comments)
Changes from V1:
- Kconfig option name fixed
- Makefile entry sanitized
- Unneeded headers removed
- EMAC initialization moved to separate file/patch
- Use gpio_{request,free}_{array,one} where possible
- don't use platform data for touchscreen, we only need to pass
irq number, do it via client.irq
- check mcx_ts_init return value
- Moved DEBUG_LL_OMAP3 entry to be in aplhabetical order
- check return value of gpio_request for USB pwr pin
- use pr_err instead of printk for error printing
- added a fixed regulator for vdds_dsi
- added SDcard card-detect pin
arch/arm/mach-omap2/Kconfig | 6 +
arch/arm/mach-omap2/Makefile | 1 +
arch/arm/mach-omap2/board-mcx.c | 500 ++++++++++++++++++++++++++
arch/arm/plat-omap/include/plat/uncompress.h | 1 +
4 files changed, 508 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-omap2/board-mcx.c
diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index 0eb27b2..fd9b8c0 100644
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -231,6 +231,12 @@ config MACH_OMAP_3430SDP
default y
select OMAP_PACKAGE_CBB
+config MACH_MCX
+ bool "HTKW mcx (AM3517 based) board"
+ depends on ARCH_OMAP3
+ select OMAP_PACKAGE_CBB
+ select REGULATOR_FIXED_VOLTAGE
+
config MACH_NOKIA_N800
bool
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 5d75cb5..9405dfc 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -238,6 +238,7 @@ obj-$(CONFIG_MACH_CRANEBOARD) += board-am3517crane.o
obj-$(CONFIG_MACH_SBC3530) += board-omap3stalker.o
obj-$(CONFIG_MACH_TI8168EVM) += board-ti8168evm.o
obj-$(CONFIG_MACH_TI8148EVM) += board-ti8168evm.o
+obj-$(CONFIG_MACH_MCX) += board-mcx.o
# Platform specific device init code
diff --git a/arch/arm/mach-omap2/board-mcx.c b/arch/arm/mach-omap2/board-mcx.c
new file mode 100644
index 0000000..70c4339
--- /dev/null
+++ b/arch/arm/mach-omap2/board-mcx.c
@@ -0,0 +1,500 @@
+/*
+ * Copyright (C) 2011 Ilya Yanok, Emcraft Systems
+ *
+ * Modified from mach-omap2/board-omap3beagle.c
+ *
+ * Initial code: Syed Mohammed Khasim
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/gpio.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/nand.h>
+#include <linux/mmc/host.h>
+#include <linux/regulator/fixed.h>
+#include <linux/regulator/machine.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+
+#include <plat/common.h>
+#include <video/omapdss.h>
+#include <video/omap-panel-generic-dpi.h>
+#include <plat/usb.h>
+
+#include "am35xx-emac.h"
+#include "mux.h"
+#include "control.h"
+#include "hsmmc.h"
+#include "common-board-devices.h"
+#include "common.h"
+
+#define MCX_MDIO_FREQUENCY (1000000)
+
+static struct mtd_partition mcx_nand_partitions[] = {
+ /* All the partition sizes are listed in terms of NAND block size */
+ {
+ .name = "X-Loader",
+ .offset = 0,
+ .size = 4 * NAND_BLOCK_SIZE,
+ .mask_flags = MTD_WRITEABLE, /* force read-only */
+ },
+ {
+ .name = "U-Boot",
+ .offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */
+ .size = 15 * NAND_BLOCK_SIZE,
+ .mask_flags = MTD_WRITEABLE, /* force read-only */
+ },
+ {
+ .name = "U-Boot Env",
+ .offset = MTDPART_OFS_APPEND, /* Offset = 0x260000 */
+ .size = 1 * NAND_BLOCK_SIZE,
+ },
+ {
+ .name = "Kernel",
+ .offset = MTDPART_OFS_APPEND, /* Offset = 0x280000 */
+ .size = 32 * NAND_BLOCK_SIZE,
+ },
+ {
+ .name = "File System",
+ .offset = MTDPART_OFS_APPEND, /* Offset = 0x680000 */
+ .size = MTDPART_SIZ_FULL,
+ },
+};
+
+#define LCD_PWR_ENn 131
+#define HDMI_TRCVR_PDn 133
+#define LCD_BKLIGHT_EN 55
+#define LCD_LVL_SFHT_BUF_ENn 43
+
+static int lcd_enabled;
+static int dvi_enabled;
+
+static int mcx_panel_enable_lcd(struct omap_dss_device *dssdev)
+{
+ if (dvi_enabled) {
+ pr_err("cannot enable LCD, DVI is enabled\n");
+ return -EINVAL;
+ }
+
+ gpio_set_value(LCD_BKLIGHT_EN, 1);
+ lcd_enabled = 1;
+
+ return 0;
+}
+
+static void mcx_panel_disable_lcd(struct omap_dss_device *dssdev)
+{
+ gpio_set_value(LCD_BKLIGHT_EN, 0);
+ lcd_enabled = 0;
+}
+
+static struct panel_generic_dpi_data lcd_panel = {
+ .name = "focaltech_etm070003dh6",
+ .platform_enable = mcx_panel_enable_lcd,
+ .platform_disable = mcx_panel_disable_lcd,
+};
+
+static struct omap_dss_device mcx_lcd_device = {
+ .type = OMAP_DISPLAY_TYPE_DPI,
+ .name = "lcd",
+ .driver_name = "generic_dpi_panel",
+ .data = &lcd_panel,
+ .phy.dpi.data_lines = 24,
+};
+
+/*
+ * TV Output
+ */
+
+static int mcx_panel_enable_tv(struct omap_dss_device *dssdev)
+{
+ return 0;
+}
+
+static void mcx_panel_disable_tv(struct omap_dss_device *dssdev)
+{
+}
+
+static struct omap_dss_device mcx_tv_device = {
+ .type = OMAP_DISPLAY_TYPE_VENC,
+ .name = "tv",
+ .driver_name = "venc",
+ .phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
+ .platform_enable = mcx_panel_enable_tv,
+ .platform_disable = mcx_panel_disable_tv,
+};
+
+/*
+ * DVI/HDMI Output
+ */
+
+static int mcx_panel_enable_dvi(struct omap_dss_device *dssdev)
+{
+ if (lcd_enabled) {
+ pr_err("cannot enable DVI, LCD is enabled\n");
+ return -EINVAL;
+ }
+ dvi_enabled = 1;
+ gpio_set_value(HDMI_TRCVR_PDn, 1);
+ return 0;
+}
+
+static void mcx_panel_disable_dvi(struct omap_dss_device *dssdev)
+{
+ dvi_enabled = 0;
+ gpio_set_value(HDMI_TRCVR_PDn, 0);
+}
+
+static struct panel_generic_dpi_data dvi_panel = {
+ .platform_enable = mcx_panel_enable_dvi,
+ .platform_disable = mcx_panel_disable_dvi,
+};
+static struct omap_dss_device mcx_dvi_device = {
+ .type = OMAP_DISPLAY_TYPE_DPI,
+ .name = "dvi",
+ .driver_name = "dvi",
+ .data = &dvi_panel,
+ .phy.dpi.data_lines = 24,
+};
+
+static struct omap_dss_device *mcx_dss_devices[] = {
+ &mcx_lcd_device,
+ &mcx_tv_device,
+ &mcx_dvi_device,
+};
+
+static struct omap_dss_board_info mcx_dss_data = {
+ .num_devices = ARRAY_SIZE(mcx_dss_devices),
+ .devices = mcx_dss_devices,
+ .default_device = &mcx_lcd_device,
+};
+
+/*
+ * use fake regulator for vdds_dsi as we can't find this pin inside
+ * AM3517 datasheet.
+ */
+static struct regulator_consumer_supply mcx_vdds_dsi_supply[] = {
+ REGULATOR_SUPPLY("vdds_dsi", "omapdss"),
+ REGULATOR_SUPPLY("vdds_dsi", "omapdss_dsi.0"),
+};
+
+static struct regulator_init_data mcx_vdds_dsi = {
+ .constraints = {
+ .valid_modes_mask = REGULATOR_MODE_NORMAL,
+ .always_on = 1,
+ },
+ .num_consumer_supplies = ARRAY_SIZE(mcx_vdds_dsi_supply),
+ .consumer_supplies = mcx_vdds_dsi_supply,
+};
+
+static struct fixed_voltage_config mcx_display = {
+ .supply_name = "display",
+ .microvolts = 1800000,
+ .gpio = -EINVAL,
+ .enabled_at_boot = 1,
+ .init_data = &mcx_vdds_dsi,
+};
+
+static struct platform_device mcx_display_device = {
+ .name = "reg-fixed-voltage",
+ .id = 0,
+ .dev = {
+ .platform_data = &mcx_display,
+ },
+};
+
+static struct gpio mcx_dss_gpios[] __initdata = {
+ { LCD_BKLIGHT_EN, GPIOF_OUT_INIT_LOW, "lcd backlight enable" },
+ { LCD_LVL_SFHT_BUF_ENn, GPIOF_OUT_INIT_LOW, "lcd lvl shifter" },
+ { LCD_PWR_ENn, GPIOF_OUT_INIT_LOW, "lcd power enable" },
+ { HDMI_TRCVR_PDn, GPIOF_OUT_INIT_LOW, "HDMI trcvr power" },
+};
+
+static void __init mcx_display_init(void)
+{
+ int r;
+
+ omap_mux_init_gpio(LCD_BKLIGHT_EN, OMAP_PIN_OUTPUT);
+ omap_mux_init_gpio(LCD_LVL_SFHT_BUF_ENn, OMAP_PIN_OUTPUT);
+ omap_mux_init_gpio(LCD_PWR_ENn, OMAP_PIN_OUTPUT);
+ omap_mux_init_gpio(HDMI_TRCVR_PDn, OMAP_PIN_OUTPUT);
+
+ r = gpio_request_array(mcx_dss_gpios, ARRAY_SIZE(mcx_dss_gpios));
+ if (r) {
+ pr_err("failed to get DSS control GPIOs\n");
+ return;
+ }
+
+ r = omap_display_init(&mcx_dss_data);
+ if (r) {
+ pr_err("Failed to register DSS device\n");
+ gpio_free_array(mcx_dss_gpios, ARRAY_SIZE(mcx_dss_gpios));
+ }
+}
+
+/* TPS65023 specific initialization */
+/* VDCDC1 -> VDD_CORE */
+static struct regulator_consumer_supply am3517_vdcdc1_supplies[] = {
+ {
+ .supply = "vdd_core",
+ },
+};
+
+/* VDCDC2 -> VDDSHV */
+static struct regulator_consumer_supply am3517_vdcdc2_supplies[] = {
+ {
+ .supply = "vddshv",
+ },
+};
+
+/*
+ * VDCDC2 |-> VDDS
+ * |-> VDDS_SRAM_CORE_BG
+ * |-> VDDS_SRAM_MPU
+ */
+static struct regulator_consumer_supply am3517_vdcdc3_supplies[] = {
+ {
+ .supply = "vdds",
+ },
+ {
+ .supply = "vdds_sram_core_bg",
+ },
+ {
+ .supply = "vdds_sram_mpu",
+ },
+};
+
+/*
+ * LDO1 |-> VDDA1P8V_USBPHY
+ * |-> VDDA_DAC
+ */
+static struct regulator_consumer_supply am3517_ldo1_supplies[] = {
+ {
+ .supply = "vdda1p8v_usbphy",
+ },
+ {
+ .supply = "vdda_dac",
+ },
+};
+
+/* LDO2 -> VDDA3P3V_USBPHY */
+static struct regulator_consumer_supply am3517_ldo2_supplies[] = {
+ {
+ .supply = "vdda3p3v_usbphy",
+ },
+};
+
+static struct regulator_init_data mcx_regulator_data[] = {
+ /* DCDC1 */
+ {
+ .constraints = {
+ .min_uV = 1200000,
+ .max_uV = 1200000,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL,
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ .always_on = true,
+ .apply_uV = false,
+ },
+ .num_consumer_supplies = ARRAY_SIZE(am3517_vdcdc1_supplies),
+ .consumer_supplies = am3517_vdcdc1_supplies,
+ },
+ /* DCDC2 */
+ {
+ .constraints = {
+ .min_uV = 3300000,
+ .max_uV = 3300000,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL,
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ .always_on = true,
+ .apply_uV = false,
+ },
+ .num_consumer_supplies = ARRAY_SIZE(am3517_vdcdc2_supplies),
+ .consumer_supplies = am3517_vdcdc2_supplies,
+ },
+ /* DCDC3 */
+ {
+ .constraints = {
+ .min_uV = 1800000,
+ .max_uV = 1800000,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL,
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ .always_on = true,
+ .apply_uV = false,
+ },
+ .num_consumer_supplies = ARRAY_SIZE(am3517_vdcdc3_supplies),
+ .consumer_supplies = am3517_vdcdc3_supplies,
+ },
+ /* LDO1 */
+ {
+ .constraints = {
+ .min_uV = 1800000,
+ .max_uV = 1800000,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL,
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ .always_on = false,
+ .apply_uV = false,
+ },
+ .num_consumer_supplies = ARRAY_SIZE(am3517_ldo1_supplies),
+ .consumer_supplies = am3517_ldo1_supplies,
+ },
+ /* LDO2 */
+ {
+ .constraints = {
+ .min_uV = 3300000,
+ .max_uV = 3300000,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL,
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ .always_on = false,
+ .apply_uV = false,
+ },
+ .num_consumer_supplies = ARRAY_SIZE(am3517_ldo2_supplies),
+ .consumer_supplies = am3517_ldo2_supplies,
+ },
+};
+
+static struct i2c_board_info __initdata mcx_i2c1_devices[] = {
+ {
+ I2C_BOARD_INFO("ds1337", 0x68),
+ },
+ {
+ I2C_BOARD_INFO("tps65023", 0x48),
+ .flags = I2C_CLIENT_WAKE,
+ .platform_data = &mcx_regulator_data[0],
+ },
+};
+
+#define TOUCH_INT_GPIO 170
+
+static int __init mcx_ts_init(void)
+{
+ struct i2c_board_info mcx_edt_ts[] = {
+ {
+ I2C_BOARD_INFO("edt_ts", 0x38),
+ .irq = gpio_to_irq(TOUCH_INT_GPIO),
+ },
+ };
+ int err;
+
+ omap_mux_init_gpio(TOUCH_INT_GPIO, OMAP_PIN_INPUT);
+ err = gpio_request_one(TOUCH_INT_GPIO, GPIOF_IN, "TOUCH_INT");
+ if (err < 0) {
+ pr_err("failed to get TOUCH_INT gpio\n");
+ return -ENODEV;
+ }
+
+ return i2c_register_board_info(3, mcx_edt_ts, 1);
+}
+
+static void __init mcx_i2c_init(void)
+{
+ omap_register_i2c_bus(1, 400, mcx_i2c1_devices,
+ ARRAY_SIZE(mcx_i2c1_devices));
+ omap_register_i2c_bus(2, 400, NULL, 0);
+ omap_register_i2c_bus(3, 400, NULL, 0);
+}
+
+#define USB_HOST_PWR_EN 132
+#define USB_PHY1_RESET 154
+#define USB_PHY2_RESET 152
+
+static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
+
+ .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
+ .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
+ .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
+
+ .phy_reset = true,
+ .reset_gpio_port[0] = USB_PHY1_RESET,
+ .reset_gpio_port[1] = USB_PHY2_RESET,
+ .reset_gpio_port[2] = -EINVAL
+};
+
+#define SD_CARD_CD 61
+#define SD_CARD_WP 65
+
+static struct omap2_hsmmc_info mmc[] = {
+ {
+ .mmc = 1,
+ .caps = MMC_CAP_4_BIT_DATA,
+ .gpio_cd = SD_CARD_CD,
+ .gpio_wp = SD_CARD_WP,
+ },
+ {} /* Terminator */
+};
+
+#ifdef CONFIG_OMAP_MUX
+static struct omap_board_mux board_mux[] __initdata = {
+ OMAP3_MUX(CHASSIS_DMAREQ3, OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLDOWN),
+ OMAP3_MUX(UART1_TX, OMAP_MUX_MODE0 | OMAP_PIN_OUTPUT),
+ OMAP3_MUX(UART1_RX, OMAP_MUX_MODE0 | OMAP_PIN_INPUT),
+ OMAP3_MUX(UART1_RTS, OMAP_MUX_MODE0 | OMAP_PIN_INPUT),
+ OMAP3_MUX(UART1_CTS, OMAP_MUX_MODE0 | OMAP_PIN_OUTPUT),
+ { .reg_offset = OMAP_MUX_TERMINATOR },
+};
+#endif
+
+static struct platform_device *mcx_devices[] __initdata = {
+ &mcx_display_device,
+};
+
+static void __init mcx_init(void)
+{
+ int err;
+
+ omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
+ mcx_i2c_init();
+ platform_add_devices(mcx_devices, ARRAY_SIZE(mcx_devices));
+ omap_serial_init();
+ omap_sdrc_init(NULL, NULL);
+
+ mcx_display_init();
+
+ /* Configure EHCI ports */
+ omap_mux_init_gpio(USB_HOST_PWR_EN, OMAP_PIN_OUTPUT);
+ omap_mux_init_gpio(USB_PHY1_RESET, OMAP_PIN_OUTPUT);
+ omap_mux_init_gpio(USB_PHY2_RESET, OMAP_PIN_OUTPUT);
+ err = gpio_request_one(USB_HOST_PWR_EN, GPIOF_OUT_INIT_HIGH,
+ "USB_HOST_PWR_EN");
+ if (err)
+ pr_warn("Failed to request USB host power enable GPIO\n");
+
+ usbhs_init(&usbhs_bdata);
+
+ /* NAND */
+ omap_nand_flash_init(NAND_BUSWIDTH_16, mcx_nand_partitions,
+ ARRAY_SIZE(mcx_nand_partitions));
+ /* Ethernet */
+ am35xx_ethernet_init(MCX_MDIO_FREQUENCY, 1);
+
+ /* MMC init */
+ omap_mux_init_gpio(SD_CARD_WP, OMAP_PIN_INPUT);
+ omap_mux_init_gpio(SD_CARD_CD, OMAP_PIN_INPUT);
+ omap2_hsmmc_init(mmc);
+
+ /* touchscreen init */
+ err = mcx_ts_init();
+ if (err < 0)
+ pr_err("failed to register touchscreen device\n");
+}
+
+static const char *mcx_dt_match[] __initdata = {
+ "htkw,mcx",
+ NULL
+};
+
+MACHINE_START(MCX, "htkw mcx")
+ /* Maintainer: Ilya Yanok */
+ .atag_offset = 0x100,
+ .reserve = omap_reserve,
+ .map_io = omap3_map_io,
+ .init_early = am35xx_init_early,
+ .init_irq = omap3_init_irq,
+ .handle_irq = omap3_intc_handle_irq,
+ .init_machine = mcx_init,
+ .timer = &omap3_timer,
+ .dt_compat = mcx_dt_match,
+MACHINE_END
diff --git a/arch/arm/plat-omap/include/plat/uncompress.h b/arch/arm/plat-omap/include/plat/uncompress.h
index 27d9d31..1141364 100644
--- a/arch/arm/plat-omap/include/plat/uncompress.h
+++ b/arch/arm/plat-omap/include/plat/uncompress.h
@@ -160,6 +160,7 @@ static inline void __arch_decomp_setup(unsigned long arch_id)
DEBUG_LL_OMAP3(3, encore);
DEBUG_LL_OMAP3(3, igep0020);
DEBUG_LL_OMAP3(3, igep0030);
+ DEBUG_LL_OMAP3(3, mcx);
DEBUG_LL_OMAP3(3, nokia_rm680);
DEBUG_LL_OMAP3(3, nokia_rx51);
DEBUG_LL_OMAP3(3, omap3517evm);
--
1.7.6.4
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