6.12-stable review patch. If anyone has any objections, please let me know.
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From: Quentin Schulz quentin.schulz@cherry.de
commit baa18d577cd445145039e731d3de0fa49ca57204 upstream.
We've had reports from the field that some RK3588 Tiger have random issues with eMMC errors.
Applying commit a28352cf2d2f ("mmc: sdhci-of-dwcmshc: Change DLL_STRBIN_TAPNUM_DEFAULT to 0x4") didn't help and seemed to have made things worse for our board.
Our HW department checked the eMMC lines and reported that they are too long and don't look great so signal integrity is probably not the best.
Note that not all Tigers with the same eMMC chip have errors, so the suspicion is that we're really on the edge in terms of signal integrity and only a handful devices are failing. Additionally, we have RK3588 Jaguars with the same eMMC chip but the layout is different and we also haven't received reports about those so far.
Lowering the max-frequency to 150MHz from 200MHz instead of simply disabling HS400 was briefly tested and seem to work as well. We've disabled HS400 downstream and haven't received reports since so we'll go with that instead of lowering the max-frequency.
Signed-off-by: Quentin Schulz quentin.schulz@cherry.de Fixes: 6173ef24b35b ("arm64: dts: rockchip: add RK3588-Q7 (Tiger) SoM") Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20251112-tiger-hs200-v1-1-b50adac107c0@cherry.de [added Fixes tag and stable-cc from 2nd mail] Signed-off-by: Heiko Stuebner heiko@sntech.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/arm64/boot/dts/rockchip/rk3588-tiger.dtsi | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
--- a/arch/arm64/boot/dts/rockchip/rk3588-tiger.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3588-tiger.dtsi @@ -359,14 +359,12 @@ cap-mmc-highspeed; mmc-ddr-1_8v; mmc-hs200-1_8v; - mmc-hs400-1_8v; - mmc-hs400-enhanced-strobe; mmc-pwrseq = <&emmc_pwrseq>; no-sdio; no-sd; non-removable; pinctrl-names = "default"; - pinctrl-0 = <&emmc_bus8 &emmc_cmd &emmc_clk &emmc_data_strobe>; + pinctrl-0 = <&emmc_bus8 &emmc_cmd &emmc_clk>; vmmc-supply = <&vcc_3v3_s3>; vqmmc-supply = <&vcc_1v8_s3>; status = "okay";