@@ -32,6 +32,7 @@
#include <common.h>
#include <twl4030.h>
#include <asm/io.h>
+#include <asm/gpio.h>
#include <asm/arch/mmc_host_def.h>
#include <asm/arch/mux.h>
#include <asm/arch/gpio.h>
@@ -45,6 +46,10 @@ DECLARE_GLOBAL_DATA_PTR;
#define TWL4030_BB_CFG_BBSEL_3200MV (3 << 2)
#define TWL4030_BB_CFG_BBISEL_500UA 2
+#define CONTROL_WKUP_CTRL 0x48002a5c
+#define GPIO_IO_PWRDNZ (1 << 6)
+#define PBIASLITEVMODE1 (1 << 8)
+
/*
* Routine: board_init
* Description: Early hardware init.
@@ -60,29 +65,52 @@ int board_init(void)
return 0;
}
+static void set_output_gpio(unsigned int gpio, int value)
+{
+ int ret;
+
+ ret = gpio_request(gpio, "");
+ if (ret != 0) {
+ printf("could not request GPIO %u\n", gpio);
+ return;
+ }
+ ret = gpio_direction_output(gpio, value);
+ if (ret != 0)
+ printf("could not set GPIO %u to %d\n", gpio, value);
+}
+
/*
* Routine: misc_init_r
* Description: Configure board specific parts
*/
int misc_init_r(void)
{
- struct gpio *gpio1_base = (struct gpio *)OMAP34XX_GPIO1_BASE;
- struct gpio *gpio4_base = (struct gpio *)OMAP34XX_GPIO4_BASE;
- struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
- struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
+ t2_t *t2_base = (t2_t *)T2_BASE;
+ u32 pbias_lite;
twl4030_led_init(TWL4030_LED_LEDEN_LEDBON);
- /* Configure GPIOs to output */
- writel(~(GPIO14 | GPIO15 | GPIO16 | GPIO23), &gpio1_base->oe);
- writel(~GPIO22, &gpio4_base->oe); /* 118 */
- writel(~(GPIO0 | GPIO1 | GPIO28 | GPIO29 | GPIO30 | GPIO31),
- &gpio5_base->oe); /* 128, 129, 156-159 */
- writel(~GPIO4, &gpio6_base->oe); /* 164 */
+ /* set up dual-voltage GPIOs to 1.8V */
+ pbias_lite = readl(&t2_base->pbias_lite);
+ pbias_lite &= ~PBIASLITEVMODE1;
+ pbias_lite |= PBIASLITEPWRDNZ1;
+ writel(pbias_lite, &t2_base->pbias_lite);
+ if (get_cpu_family() == CPU_OMAP36XX)
+ writel(readl(CONTROL_WKUP_CTRL) | GPIO_IO_PWRDNZ,
+ CONTROL_WKUP_CTRL);
+
+ /* make sure audio and BT chips are in powerdown state */
+ set_output_gpio(14, 0);
+ set_output_gpio(15, 0);
+ set_output_gpio(118, 0);
+
+ /* enable USB supply */
+ set_output_gpio(164, 1);
- /* Set GPIOs */
- writel(GPIO28, &gpio5_base->setdataout);
- writel(GPIO4, &gpio6_base->setdataout);
+ /* wifi needs a short pulse to enter powersave state */
+ set_output_gpio(23, 1);
+ udelay(5000);
+ gpio_direction_output(23, 0);
/* Enable battery backup capacitor (3.2V, 0.5mA charge current) */
twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
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> --- board/pandora/pandora.c | 54 +++++++++++++++++++++++++++++++++++----------- 1 files changed, 41 insertions(+), 13 deletions(-)