OMAP3: pandora: revise GPIO configuration
Update pandora's GPIO setup code with these changes: - convert to gpiolib - set up dual voltage GPIOs to match supply of 1.8V by clearing VMODE1 - add GPIO_IO_PWRDNZ configuration for DM3730 variation of pandora (required to enable GPIO 126, 127, and 129 I/O cells in DM3730) - add wifi reset pulse as recommended by wifi chip's manufacturer - drop configuration of GPIOs that u-boot doesn't need Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
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@ -32,6 +32,7 @@
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#include <common.h>
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#include <common.h>
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#include <twl4030.h>
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#include <twl4030.h>
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#include <asm/io.h>
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#include <asm/io.h>
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#include <asm/gpio.h>
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#include <asm/arch/mmc_host_def.h>
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#include <asm/arch/mmc_host_def.h>
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#include <asm/arch/mux.h>
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#include <asm/arch/mux.h>
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#include <asm/arch/gpio.h>
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#include <asm/arch/gpio.h>
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@ -45,6 +46,10 @@ DECLARE_GLOBAL_DATA_PTR;
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#define TWL4030_BB_CFG_BBSEL_3200MV (3 << 2)
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#define TWL4030_BB_CFG_BBSEL_3200MV (3 << 2)
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#define TWL4030_BB_CFG_BBISEL_500UA 2
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#define TWL4030_BB_CFG_BBISEL_500UA 2
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#define CONTROL_WKUP_CTRL 0x48002a5c
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#define GPIO_IO_PWRDNZ (1 << 6)
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#define PBIASLITEVMODE1 (1 << 8)
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/*
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/*
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* Routine: board_init
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* Routine: board_init
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* Description: Early hardware init.
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* Description: Early hardware init.
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@ -60,29 +65,52 @@ int board_init(void)
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return 0;
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return 0;
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}
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}
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static void set_output_gpio(unsigned int gpio, int value)
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{
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int ret;
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ret = gpio_request(gpio, "");
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if (ret != 0) {
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printf("could not request GPIO %u\n", gpio);
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return;
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}
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ret = gpio_direction_output(gpio, value);
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if (ret != 0)
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printf("could not set GPIO %u to %d\n", gpio, value);
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}
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/*
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/*
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* Routine: misc_init_r
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* Routine: misc_init_r
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* Description: Configure board specific parts
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* Description: Configure board specific parts
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*/
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*/
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int misc_init_r(void)
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int misc_init_r(void)
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{
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{
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struct gpio *gpio1_base = (struct gpio *)OMAP34XX_GPIO1_BASE;
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t2_t *t2_base = (t2_t *)T2_BASE;
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struct gpio *gpio4_base = (struct gpio *)OMAP34XX_GPIO4_BASE;
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u32 pbias_lite;
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struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
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struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
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twl4030_led_init(TWL4030_LED_LEDEN_LEDBON);
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twl4030_led_init(TWL4030_LED_LEDEN_LEDBON);
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/* Configure GPIOs to output */
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/* set up dual-voltage GPIOs to 1.8V */
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writel(~(GPIO14 | GPIO15 | GPIO16 | GPIO23), &gpio1_base->oe);
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pbias_lite = readl(&t2_base->pbias_lite);
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writel(~GPIO22, &gpio4_base->oe); /* 118 */
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pbias_lite &= ~PBIASLITEVMODE1;
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writel(~(GPIO0 | GPIO1 | GPIO28 | GPIO29 | GPIO30 | GPIO31),
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pbias_lite |= PBIASLITEPWRDNZ1;
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&gpio5_base->oe); /* 128, 129, 156-159 */
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writel(pbias_lite, &t2_base->pbias_lite);
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writel(~GPIO4, &gpio6_base->oe); /* 164 */
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if (get_cpu_family() == CPU_OMAP36XX)
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writel(readl(CONTROL_WKUP_CTRL) | GPIO_IO_PWRDNZ,
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CONTROL_WKUP_CTRL);
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/* Set GPIOs */
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/* make sure audio and BT chips are in powerdown state */
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writel(GPIO28, &gpio5_base->setdataout);
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set_output_gpio(14, 0);
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writel(GPIO4, &gpio6_base->setdataout);
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set_output_gpio(15, 0);
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set_output_gpio(118, 0);
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/* enable USB supply */
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set_output_gpio(164, 1);
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/* wifi needs a short pulse to enter powersave state */
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set_output_gpio(23, 1);
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udelay(5000);
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gpio_direction_output(23, 0);
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/* Enable battery backup capacitor (3.2V, 0.5mA charge current) */
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/* Enable battery backup capacitor (3.2V, 0.5mA charge current) */
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
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