398 lines
11 KiB
C
398 lines
11 KiB
C
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/*
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* linux/arch/arm/mach-omap1/board-osk.c
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*
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* Board specific init for OMAP5912 OSK
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*
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* Written by Dirk Behme <dirk.behme@de.bosch.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/gpio.h>
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#include <linux/gpio/machine.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <linux/i2c.h>
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#include <linux/leds.h>
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#include <linux/smc91x.h>
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#include <linux/omapfb.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/mtd/physmap.h>
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#include <linux/mfd/tps65010.h>
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#include <linux/platform_data/gpio-omap.h>
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#include <linux/platform_data/omap1_bl.h>
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#include <linux/soc/ti/omap1-io.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include "tc.h"
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#include "flash.h"
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#include "mux.h"
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#include "hardware.h"
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#include "usb.h"
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#include "common.h"
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/* Name of the GPIO chip used by the OMAP for GPIOs 0..15 */
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#define OMAP_GPIO_LABEL "gpio-0-15"
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/* At OMAP5912 OSK the Ethernet is directly connected to CS1 */
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#define OMAP_OSK_ETHR_START 0x04800300
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/* TPS65010 has four GPIOs. nPG and LED2 can be treated like GPIOs with
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* alternate pin configurations for hardware-controlled blinking.
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*/
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#define OSK_TPS_GPIO_BASE (OMAP_MAX_GPIO_LINES + 16 /* MPUIO */)
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# define OSK_TPS_GPIO_USB_PWR_EN (OSK_TPS_GPIO_BASE + 0)
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# define OSK_TPS_GPIO_LED_D3 (OSK_TPS_GPIO_BASE + 1)
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# define OSK_TPS_GPIO_LAN_RESET (OSK_TPS_GPIO_BASE + 2)
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# define OSK_TPS_GPIO_DSP_PWR_EN (OSK_TPS_GPIO_BASE + 3)
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# define OSK_TPS_GPIO_LED_D9 (OSK_TPS_GPIO_BASE + 4)
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# define OSK_TPS_GPIO_LED_D2 (OSK_TPS_GPIO_BASE + 5)
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static struct mtd_partition osk_partitions[] = {
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/* bootloader (U-Boot, etc) in first sector */
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{
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.name = "bootloader",
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.offset = 0,
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.size = SZ_128K,
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.mask_flags = MTD_WRITEABLE, /* force read-only */
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},
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/* bootloader params in the next sector */
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{
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.name = "params",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_128K,
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.mask_flags = 0,
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}, {
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.name = "kernel",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_2M,
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.mask_flags = 0
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}, {
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.name = "filesystem",
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.offset = MTDPART_OFS_APPEND,
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.size = MTDPART_SIZ_FULL,
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.mask_flags = 0
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}
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};
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static struct physmap_flash_data osk_flash_data = {
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.width = 2,
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.set_vpp = omap1_set_vpp,
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.parts = osk_partitions,
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.nr_parts = ARRAY_SIZE(osk_partitions),
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};
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static struct resource osk_flash_resource = {
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/* this is on CS3, wherever it's mapped */
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device osk5912_flash_device = {
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.name = "physmap-flash",
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.id = 0,
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.dev = {
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.platform_data = &osk_flash_data,
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},
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.num_resources = 1,
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.resource = &osk_flash_resource,
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};
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static struct smc91x_platdata osk5912_smc91x_info = {
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.flags = SMC91X_USE_16BIT | SMC91X_NOWAIT,
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.leda = RPC_LED_100_10,
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.ledb = RPC_LED_TX_RX,
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};
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static struct resource osk5912_smc91x_resources[] = {
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[0] = {
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.start = OMAP_OSK_ETHR_START, /* Physical */
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.end = OMAP_OSK_ETHR_START + 0xf,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
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},
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};
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static struct platform_device osk5912_smc91x_device = {
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.name = "smc91x",
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.id = -1,
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.dev = {
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.platform_data = &osk5912_smc91x_info,
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},
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.num_resources = ARRAY_SIZE(osk5912_smc91x_resources),
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.resource = osk5912_smc91x_resources,
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};
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static struct resource osk5912_cf_resources[] = {
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[0] = {
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.flags = IORESOURCE_IRQ,
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},
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[1] = {
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device osk5912_cf_device = {
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.name = "omap_cf",
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.id = -1,
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.num_resources = ARRAY_SIZE(osk5912_cf_resources),
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.resource = osk5912_cf_resources,
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};
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static struct platform_device *osk5912_devices[] __initdata = {
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&osk5912_flash_device,
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&osk5912_smc91x_device,
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&osk5912_cf_device,
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};
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static const struct gpio_led tps_leds[] = {
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/* NOTE: D9 and D2 have hardware blink support.
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* Also, D9 requires non-battery power.
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*/
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{ .gpio = OSK_TPS_GPIO_LED_D9, .name = "d9",
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.default_trigger = "disk-activity", },
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{ .gpio = OSK_TPS_GPIO_LED_D2, .name = "d2", },
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{ .gpio = OSK_TPS_GPIO_LED_D3, .name = "d3", .active_low = 1,
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.default_trigger = "heartbeat", },
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};
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static struct gpio_led_platform_data tps_leds_data = {
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.num_leds = 3,
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.leds = tps_leds,
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};
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static struct platform_device osk5912_tps_leds = {
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.name = "leds-gpio",
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.id = 0,
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.dev.platform_data = &tps_leds_data,
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};
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static int osk_tps_setup(struct i2c_client *client, void *context)
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{
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if (!IS_BUILTIN(CONFIG_TPS65010))
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return -ENOSYS;
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/* Set GPIO 1 HIGH to disable VBUS power supply;
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* OHCI driver powers it up/down as needed.
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*/
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gpio_request(OSK_TPS_GPIO_USB_PWR_EN, "n_vbus_en");
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gpio_direction_output(OSK_TPS_GPIO_USB_PWR_EN, 1);
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/* Free the GPIO again as the driver will request it */
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gpio_free(OSK_TPS_GPIO_USB_PWR_EN);
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/* Set GPIO 2 high so LED D3 is off by default */
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tps65010_set_gpio_out_value(GPIO2, HIGH);
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/* Set GPIO 3 low to take ethernet out of reset */
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gpio_request(OSK_TPS_GPIO_LAN_RESET, "smc_reset");
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gpio_direction_output(OSK_TPS_GPIO_LAN_RESET, 0);
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/* GPIO4 is VDD_DSP */
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gpio_request(OSK_TPS_GPIO_DSP_PWR_EN, "dsp_power");
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gpio_direction_output(OSK_TPS_GPIO_DSP_PWR_EN, 1);
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/* REVISIT if DSP support isn't configured, power it off ... */
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/* Let LED1 (D9) blink; leds-gpio may override it */
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tps65010_set_led(LED1, BLINK);
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/* Set LED2 off by default */
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tps65010_set_led(LED2, OFF);
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/* Enable LOW_PWR handshake */
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tps65010_set_low_pwr(ON);
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/* Switch VLDO2 to 3.0V for AIC23 */
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tps65010_config_vregs1(TPS_LDO2_ENABLE | TPS_VLDO2_3_0V
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| TPS_LDO1_ENABLE);
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/* register these three LEDs */
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osk5912_tps_leds.dev.parent = &client->dev;
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platform_device_register(&osk5912_tps_leds);
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return 0;
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}
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static struct tps65010_board tps_board = {
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.base = OSK_TPS_GPIO_BASE,
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.outmask = 0x0f,
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.setup = osk_tps_setup,
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};
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static struct i2c_board_info __initdata osk_i2c_board_info[] = {
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{
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/* This device will get the name "i2c-tps65010" */
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I2C_BOARD_INFO("tps65010", 0x48),
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.dev_name = "tps65010",
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.platform_data = &tps_board,
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},
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{
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I2C_BOARD_INFO("tlv320aic23", 0x1B),
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},
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/* TODO when driver support is ready:
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* - optionally on Mistral, ov9640 camera sensor at 0x30
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*/
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};
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static void __init osk_init_smc91x(void)
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{
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u32 l;
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if ((gpio_request(0, "smc_irq")) < 0) {
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printk("Error requesting gpio 0 for smc91x irq\n");
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return;
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}
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/* Check EMIFS wait states to fix errors with SMC_GET_PKT_HDR */
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l = omap_readl(EMIFS_CCS(1));
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l |= 0x3;
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omap_writel(l, EMIFS_CCS(1));
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}
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static void __init osk_init_cf(int seg)
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{
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struct resource *res = &osk5912_cf_resources[1];
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omap_cfg_reg(M7_1610_GPIO62);
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if ((gpio_request(62, "cf_irq")) < 0) {
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printk("Error requesting gpio 62 for CF irq\n");
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return;
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}
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switch (seg) {
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/* NOTE: CS0 could be configured too ... */
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case 1:
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res->start = OMAP_CS1_PHYS;
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break;
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case 2:
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res->start = OMAP_CS2_PHYS;
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break;
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case 3:
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res->start = omap_cs3_phys();
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break;
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}
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res->end = res->start + SZ_8K - 1;
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osk5912_cf_device.dev.platform_data = (void *)(uintptr_t)seg;
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/* NOTE: better EMIFS setup might support more cards; but the
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* TRM only shows how to affect regular flash signals, not their
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* CF/PCMCIA variants...
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*/
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pr_debug("%s: cs%d, previous ccs %08x acs %08x\n", __func__,
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seg, omap_readl(EMIFS_CCS(seg)), omap_readl(EMIFS_ACS(seg)));
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omap_writel(0x0004a1b3, EMIFS_CCS(seg)); /* synch mode 4 etc */
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omap_writel(0x00000000, EMIFS_ACS(seg)); /* OE hold/setup */
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/* the CF I/O IRQ is really active-low */
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irq_set_irq_type(gpio_to_irq(62), IRQ_TYPE_EDGE_FALLING);
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}
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static struct gpiod_lookup_table osk_usb_gpio_table = {
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.dev_id = "ohci",
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.table = {
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/* Power GPIO on the I2C-attached TPS65010 */
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GPIO_LOOKUP("tps65010", 0, "power", GPIO_ACTIVE_HIGH),
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GPIO_LOOKUP(OMAP_GPIO_LABEL, 9, "overcurrent",
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GPIO_ACTIVE_HIGH),
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},
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};
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static struct omap_usb_config osk_usb_config __initdata = {
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/* has usb host connector (A) ... for development it can also
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* be used, with a NONSTANDARD gender-bending cable/dongle, as
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* a peripheral.
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*/
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#if IS_ENABLED(CONFIG_USB_OMAP)
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.register_dev = 1,
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.hmc_mode = 0,
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#else
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.register_host = 1,
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.hmc_mode = 16,
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.rwc = 1,
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#endif
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.pins[0] = 2,
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};
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#define EMIFS_CS3_VAL (0x88013141)
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static void __init osk_init(void)
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{
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u32 l;
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osk_init_smc91x();
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osk_init_cf(2); /* CS2 */
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||
|
|
|
||
|
|
/* Workaround for wrong CS3 (NOR flash) timing
|
||
|
|
* There are some U-Boot versions out there which configure
|
||
|
|
* wrong CS3 memory timings. This mainly leads to CRC
|
||
|
|
* or similar errors if you use NOR flash (e.g. with JFFS2)
|
||
|
|
*/
|
||
|
|
l = omap_readl(EMIFS_CCS(3));
|
||
|
|
if (l != EMIFS_CS3_VAL)
|
||
|
|
omap_writel(EMIFS_CS3_VAL, EMIFS_CCS(3));
|
||
|
|
|
||
|
|
osk_flash_resource.end = osk_flash_resource.start = omap_cs3_phys();
|
||
|
|
osk_flash_resource.end += SZ_32M - 1;
|
||
|
|
osk5912_smc91x_resources[1].start = gpio_to_irq(0);
|
||
|
|
osk5912_smc91x_resources[1].end = gpio_to_irq(0);
|
||
|
|
osk5912_cf_resources[0].start = gpio_to_irq(62);
|
||
|
|
osk5912_cf_resources[0].end = gpio_to_irq(62);
|
||
|
|
platform_add_devices(osk5912_devices, ARRAY_SIZE(osk5912_devices));
|
||
|
|
|
||
|
|
l = omap_readl(USB_TRANSCEIVER_CTRL);
|
||
|
|
l |= (3 << 1);
|
||
|
|
omap_writel(l, USB_TRANSCEIVER_CTRL);
|
||
|
|
|
||
|
|
gpiod_add_lookup_table(&osk_usb_gpio_table);
|
||
|
|
omap1_usb_init(&osk_usb_config);
|
||
|
|
|
||
|
|
/* irq for tps65010 chip */
|
||
|
|
/* bootloader effectively does: omap_cfg_reg(U19_1610_MPUIO1); */
|
||
|
|
if (gpio_request(OMAP_MPUIO(1), "tps65010") == 0)
|
||
|
|
gpio_direction_input(OMAP_MPUIO(1));
|
||
|
|
|
||
|
|
omap_serial_init();
|
||
|
|
osk_i2c_board_info[0].irq = gpio_to_irq(OMAP_MPUIO(1));
|
||
|
|
omap_register_i2c_bus(1, 400, osk_i2c_board_info,
|
||
|
|
ARRAY_SIZE(osk_i2c_board_info));
|
||
|
|
}
|
||
|
|
|
||
|
|
MACHINE_START(OMAP_OSK, "TI-OSK")
|
||
|
|
/* Maintainer: Dirk Behme <dirk.behme@de.bosch.com> */
|
||
|
|
.atag_offset = 0x100,
|
||
|
|
.map_io = omap1_map_io,
|
||
|
|
.init_early = omap1_init_early,
|
||
|
|
.init_irq = omap1_init_irq,
|
||
|
|
.handle_irq = omap1_handle_irq,
|
||
|
|
.init_machine = osk_init,
|
||
|
|
.init_late = omap1_init_late,
|
||
|
|
.init_time = omap1_timer_init,
|
||
|
|
.restart = omap1_restart,
|
||
|
|
MACHINE_END
|