diff options
Diffstat (limited to 'src/mainboard/google/nyan/mainboard.c')
| -rw-r--r-- | src/mainboard/google/nyan/mainboard.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/src/mainboard/google/nyan/mainboard.c b/src/mainboard/google/nyan/mainboard.c index 15eff8ecd5..a25b5fd238 100644 --- a/src/mainboard/google/nyan/mainboard.c +++ b/src/mainboard/google/nyan/mainboard.c @@ -97,7 +97,7 @@ static void setup_pinmux(void) pin_down = PINMUX_PULL_DOWN | PINMUX_INPUT_ENABLE, pin_none = PINMUX_PULL_NONE | PINMUX_INPUT_ENABLE; - // MMC3 + // MMC3 (sdcard reader) pinmux_set_config(PINMUX_SDMMC3_CLK_INDEX, PINMUX_SDMMC3_CLK_FUNC_SDMMC3 | pin_none); pinmux_set_config(PINMUX_SDMMC3_CMD_INDEX, @@ -117,10 +117,11 @@ static void setup_pinmux(void) // MMC3 Card Detect pin. gpio_input_pullup(GPIO(V2)); - // Enable MMC power. - gpio_output(GPIO(R0), 1); + // Disable SD card reader power so it can be reset even on warm boot. + // Payloads must enable power before accessing SD card slots. + gpio_output(GPIO(R0), 0); - // MMC4 + // MMC4 (eMMC) pinmux_set_config(PINMUX_SDMMC4_CLK_INDEX, PINMUX_SDMMC4_CLK_FUNC_SDMMC4 | pin_none); pinmux_set_config(PINMUX_SDMMC4_CMD_INDEX, |