Ensure that cameras and USB OTG power are in a stable (reset) state at reset by configuring their pads and toggling GPIOs.
Signed-off-by: Troy Kisky troy.kisky@boundarydevices.com Signed-off-by: Eric Nelson eric.nelson@boundarydevices.com --- board/boundary/nitrogen6x/nitrogen6x.c | 47 +++++++++++++++++++++++++++++++--- 1 file changed, 43 insertions(+), 4 deletions(-)
diff --git a/board/boundary/nitrogen6x/nitrogen6x.c b/board/boundary/nitrogen6x/nitrogen6x.c index bde299f..38f0df8 100644 --- a/board/boundary/nitrogen6x/nitrogen6x.c +++ b/board/boundary/nitrogen6x/nitrogen6x.c @@ -622,17 +622,56 @@ static void setup_display(void) } #endif
+/* wl1271 pads on nitrogen6x */ +static iomux_v3_cfg_t const init_pads[] = { + /* WL12XX_WL_IRQ_GP */ + NEW_PAD_CTRL(MX6_PAD_NANDF_CS1__GPIO6_IO14, WEAK_PULLDOWN), + /* WL12XX_WL_ENABLE_GP */ + NEW_PAD_CTRL(MX6_PAD_NANDF_CS2__GPIO6_IO15, OUTPUT_40OHM), + /* WL12XX_BT_ENABLE_GP */ + NEW_PAD_CTRL(MX6_PAD_NANDF_CS3__GPIO6_IO16, OUTPUT_40OHM), + /* USB otg power */ + NEW_PAD_CTRL(MX6_PAD_EIM_D22__GPIO3_IO22, OUTPUT_40OHM), + NEW_PAD_CTRL(MX6_PAD_NANDF_D5__GPIO2_IO05, OUTPUT_40OHM), + NEW_PAD_CTRL(MX6_PAD_NANDF_WP_B__GPIO6_IO09, OUTPUT_40OHM), + NEW_PAD_CTRL(MX6_PAD_GPIO_8__GPIO1_IO08, OUTPUT_40OHM), + NEW_PAD_CTRL(MX6_PAD_GPIO_6__GPIO1_IO06, OUTPUT_40OHM), +}; + +#define WL12XX_WL_IRQ_GP IMX_GPIO_NR(6, 14) + +static unsigned gpios_out_low[] = { + /* Disable wl1271 */ + IMX_GPIO_NR(6, 15), /* disable wireless */ + IMX_GPIO_NR(6, 16), /* disable bluetooth */ + IMX_GPIO_NR(3, 22), /* disable USB otg power */ + IMX_GPIO_NR(2, 5), /* ov5640 mipi camera reset */ + IMX_GPIO_NR(1, 8), /* ov5642 reset */ +}; + +static unsigned gpios_out_high[] = { + IMX_GPIO_NR(1, 6), /* ov5642 powerdown */ + IMX_GPIO_NR(6, 9), /* ov5640 mipi camera power down */ +}; + +static void set_gpios(unsigned *p, int cnt, int val) +{ + int i; + + for (i = 0; i < cnt; i++) + gpio_direction_output(*p++, val); +} + int board_early_init_f(void) { setup_iomux_uart();
- /* Disable wl1271 For Nitrogen6w */ + set_gpios(gpios_out_high, ARRAY_SIZE(gpios_out_high), 1); + set_gpios(gpios_out_low, ARRAY_SIZE(gpios_out_low), 0); gpio_direction_input(WL12XX_WL_IRQ_GP); - gpio_direction_output(WL12XX_WL_ENABLE_GP, 0); - gpio_direction_output(WL12XX_BT_ENABLE_GP, 0); - gpio_direction_output(GP_USB_OTG_PWR, 0); /* OTG power off */
imx_iomux_v3_setup_multiple_pads(wl12xx_pads, ARRAY_SIZE(wl12xx_pads)); + imx_iomux_v3_setup_multiple_pads(init_pads, ARRAY_SIZE(init_pads)); setup_buttons();
#if defined(CONFIG_VIDEO_IPUV3)