diff options
Diffstat (limited to 'src/mainboard/google')
| -rw-r--r-- | src/mainboard/google/kahlee/variants/baseboard/mainboard.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/src/mainboard/google/kahlee/variants/baseboard/mainboard.c b/src/mainboard/google/kahlee/variants/baseboard/mainboard.c index 54743ef7c1..b1bd4928d2 100644 --- a/src/mainboard/google/kahlee/variants/baseboard/mainboard.c +++ b/src/mainboard/google/kahlee/variants/baseboard/mainboard.c @@ -17,7 +17,8 @@ #include <baseboard/variants.h> #include <gpio.h> #include <variant/gpio.h> - +#include <device/pci.h> +#include <drivers/generic/bayhub/bh720.h> uint8_t variant_board_sku(void) { @@ -36,3 +37,26 @@ void variant_mainboard_suspend_resume(void) gpio_set(GPIO_133, 0); } #endif + +void bh720_driving_strength(struct device *dev) +{ + u32 sdbar; + u32 bh720_pcr_data; + + sdbar = pci_read_config32(dev, PCI_BASE_ADDRESS_1); + + /* Enable Memory Access Function */ + write32((void *)(sdbar + BH720_MEM_ACCESS_EN), 0x40000000); + write32((void *)(sdbar + BH720_MEM_RW_DATA), 0x80000000); + write32((void *)(sdbar + BH720_MEM_RW_ADR), 0x800000D0); + + /* Read current EMMC 1.8V CLK/DATA,CMD driving strength */ + write32((void *)(sdbar + BH720_MEM_RW_ADR), 0x40000304); + bh720_pcr_data = read32((void *)(sdbar + BH720_MEM_RW_DATA)); + + /* set EMMC 1.8V CLK/DATA,CMD the max level */ + write32((void *)(sdbar + BH720_MEM_RW_DATA), + bh720_pcr_data | (BH720_PCR_CLK_DRV_MAX << 4) | + (BH720_PCR_DATA_CMD_DRV_MAX << 1)); + write32((void *)(sdbar + BH720_MEM_RW_ADR), 0x80000304); +} |