diff options
| author | Yifeng Zhao <yifeng.zhao@rock-chips.com> | 2021-10-15 16:41:27 +0800 |
|---|---|---|
| committer | Kever Yang <kever.yang@rock-chips.com> | 2021-10-15 20:57:41 +0800 |
| commit | 022f552704b6467966e4fad39c85a6aca9204c94 (patch) | |
| tree | 36b6fb5cdbb5a82de60437e8e39573a89a799265 /drivers | |
| parent | f2cdd44adb9f06f455185b4882cfd91e8d75d58a (diff) | |
mmc: rockchip_sdhci: enable strobe line for HS400
The default configuration of rk3399 EMMC PHY does not enable the
strobe line, and EMMC controller will got data transmission error
at HS400 mode.
Signed-off-by: Yifeng Zhao <yifeng.zhao@rock-chips.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/rockchip_sdhci.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mmc/rockchip_sdhci.c b/drivers/mmc/rockchip_sdhci.c index 1ac00587d44..278473899c7 100644 --- a/drivers/mmc/rockchip_sdhci.c +++ b/drivers/mmc/rockchip_sdhci.c @@ -143,6 +143,9 @@ static void rk3399_emmc_phy_power_on(struct rockchip_emmc_phy *phy, u32 clock) writel(RK_CLRSETBITS(3 << 12, freqsel << 12), &phy->emmcphy_con[0]); writel(RK_CLRSETBITS(1 << 1, 1 << 1), &phy->emmcphy_con[6]); + /* REN Enable on STRB Line for HS400 */ + writel(RK_CLRSETBITS(0, 1 << 9), &phy->emmcphy_con[2]); + read_poll_timeout(readl, &phy->emmcphy_status, dllrdy, PHYCTRL_DLL_LOCK_WO_TMOUT(dllrdy), 1, 5000); } |