diff options
| author | Renius Chen <reniuschengl@gmail.com> | 2020-12-28 10:31:34 +0800 |
|---|---|---|
| committer | Tim Wawrzynczak <twawrzynczak@chromium.org> | 2021-01-11 21:32:55 +0000 |
| commit | 43dec1ad4c77c84dd44fc080cec6041d69b79ea8 (patch) | |
| tree | ed12fc058259a2126a973ad1fca36c715ddf5177 /src/drivers | |
| parent | 8a6c34e8ba9862814e53ad4f9b04ae1f2b9d4b49 (diff) | |
drivers/genesyslogic/gl9763e: Fix boot on eMMC failed issue on Volteer
Booting on Kingston (EMMC64G-TA29/TX29-HP) and Hynix (H26M74002HMR) eMMC
currently fails due to R/W error. This is a workaround to finetune the
data latch timing by verdor-specific setting of GL9763E. For improving
the compatibility of GL9763E with these two eMMC.
Signed-off-by: Renius Chen <reniuschengl@gmail.com>
Change-Id: Iddb145ed6a9edb2d7a50248e64659cda78b88ae6
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48941
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: YH Lin <yueherngl@google.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/genesyslogic/gl9763e/gl9763e.c | 8 | ||||
| -rw-r--r-- | src/drivers/genesyslogic/gl9763e/gl9763e.h | 8 |
2 files changed, 16 insertions, 0 deletions
diff --git a/src/drivers/genesyslogic/gl9763e/gl9763e.c b/src/drivers/genesyslogic/gl9763e/gl9763e.c index 48e520bde2..d19cc4ae46 100644 --- a/src/drivers/genesyslogic/gl9763e/gl9763e.c +++ b/src/drivers/genesyslogic/gl9763e/gl9763e.c @@ -12,6 +12,8 @@ static void gl9763e_init(struct device *dev) { + uint32_t ver; + printk(BIOS_INFO, "GL9763E: init\n"); pci_dev_init(dev); @@ -25,6 +27,12 @@ static void gl9763e_init(struct device *dev) pci_update_config32(dev, PLL_CTL_2, ~PLL_CTL_2_MAX_SSC_MASK, MAX_SSC_30000PPM); /* Enable SSC */ pci_or_config32(dev, PLL_CTL, PLL_CTL_SSC); + /* Check chip version */ + ver = pci_read_config32(dev, HW_VER_2); + if ((ver & HW_VER_MASK) == REVISION_03) { + /* Set clock source for RX path */ + pci_update_config32(dev, SD_CLKRX_DLY, ~CLK_SRC_MASK, AFTER_OUTPUT_BUFF); + } /* Set VHS to read-only */ pci_update_config32(dev, VHS, ~VHS_REV_MASK, VHS_REV_R); } diff --git a/src/drivers/genesyslogic/gl9763e/gl9763e.h b/src/drivers/genesyslogic/gl9763e/gl9763e.h index fd9c6ba5c2..5cdaa68b10 100644 --- a/src/drivers/genesyslogic/gl9763e/gl9763e.h +++ b/src/drivers/genesyslogic/gl9763e/gl9763e.h @@ -21,3 +21,11 @@ #define PLL_CTL_2 0x93C #define PLL_CTL_2_MAX_SSC_MASK (0xFFFF << 16) #define MAX_SSC_30000PPM (0xF5C3 << 16) + +#define HW_VER_2 0x8F8 +#define HW_VER_MASK 0xFFFF +#define REVISION_03 0x0011 + +#define SD_CLKRX_DLY 0x934 +#define CLK_SRC_MASK (0x3 << 24) +#define AFTER_OUTPUT_BUFF (0x0 << 24) |