diff options
Diffstat (limited to 'src/mainboard/google/gru/mainboard.c')
| -rw-r--r-- | src/mainboard/google/gru/mainboard.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/mainboard/google/gru/mainboard.c b/src/mainboard/google/gru/mainboard.c index 4a5ed4f687..6d2b4f4759 100644 --- a/src/mainboard/google/gru/mainboard.c +++ b/src/mainboard/google/gru/mainboard.c @@ -20,6 +20,20 @@ #include <soc/clock.h> #include <soc/grf.h> +static void configure_emmc(void) +{ + /* Host controller does not support programmable clock generator. + * If we don't do this setting, when we use phy to control the + * emmc clock(when clock exceed 50MHz), it will get wrong clock. + * + * Refer to TRM V0.3 Part 1 Chapter 15 PAGE 782 for this register. + * Please search "_CON11[7:0]" to locate register description. + */ + write32(&rk3399_grf->emmccore_con[11], RK_CLRSETBITS(0xff, 0)); + + rkclk_configure_emmc(); +} + static void configure_sdmmc(void) { gpio_output(GPIO(4, D, 5), 1); /* SDMMC_PWR_EN */ @@ -72,6 +86,7 @@ static void configure_sdmmc(void) static void mainboard_init(device_t dev) { configure_sdmmc(); + configure_emmc(); } static void mainboard_enable(device_t dev) |