Remove mmc-hs400-enhanced-strobe for rk3399-khadas-edge
Not compitable for some eMMC chips ( BJTD4R 29.1 GiB ). And no
performance difference in our case from emmc-hs400-enhanced-strobe option
for other eMMC chips.
Problem example ( eMMC chip BJTD4R 29.1 GiB ):
[ 0.068282] platform ff770000.syscon:phy@f780: Fixing up cyclic dependency with fe330000.mmc
[ 7.001493] mmc2: CQHCI version 5.10
[ 7.027971] mmc2: SDHCI controller on fe330000.mmc [fe330000.mmc] using ADMA
.......
[ 7.207086] mmc2: mmc_select_hs400es failed, error -110
[ 7.207129] mmc2: error -110 whilst initialising MMC card
[ 7.308893] mmc2: mmc_select_hs400es failed, error -110
[ 7.308921] mmc2: error -110 whilst initialising MMC card
[ 7.427524] mmc2: mmc_select_hs400es failed, error -110
[ 7.427546] mmc2: error -110 whilst initialising MMC card
[ 7.590993] mmc2: mmc_select_hs400es failed, error -110
[ 7.591012] mmc2: error -110 whilst initialising MMC card
Workable example without mmc-hs400-enhanced-strobe:
[ 6.960785] mmc2: CQHCI version 5.10
[ 6.984672] mmc2: SDHCI controller on fe330000.mmc [fe330000.mmc] using ADMA
[ 7.175021] mmc2: Command Queue Engine enabled
[ 7.175053] mmc2: new HS400 MMC card at address 0001
[ 7.175808] mmcblk2: mmc2:0001 BJTD4R 29.1 GiB
[ 7.176033] mmcblk2boot0: mmc2:0001 BJTD4R 4.00 MiB
[ 7.176245] mmcblk2boot1: mmc2:0001 BJTD4R 4.00 MiB
[ 7.176495] mmcblk2rpmb: mmc2:0001 BJTD4R 4.00 MiB, chardev (242:0)
Performance note for mmc-hs400-enhanced-strobe usage:
Other chips DUTA42 116 GiB works well with or without
mmc-hs400-enhanced-strobe!
..... mmc-hs400-enhanced-strobe disabled
[ 7.175053] mmc2: new HS400 MMC card at address 0001
786432000 bytes (786 MB, 750 MiB) copied, 3 s, 262 MB/s
..... mmc-hs400-enhanced-strobe enabled
[ 7.135880] mmc2: Command Queue Engine enabled
[ 7.135928] mmc2: new HS400 Enhanced strobe MMC card at address 0001
[ 7.136992] mmcblk2: mmc2:0001 DUTA42 116 GiB
1048576000 bytes (1.0 GB, 1000 MiB) copied, 4 s, 262 MB/s
Signed-off-by: Artem Lapkin <art@xxxxxxxxxx>
---
arch/arm64/boot/dts/rockchip/rk3399-khadas-edge.dtsi | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-khadas-edge.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-khadas-edge.dtsi
index d5c7648c841d..f1fcc6b5b402 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-khadas-edge.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-khadas-edge.dtsi
@@ -705,7 +705,6 @@ &sdmmc {
&sdhci {
bus-width = <8>;
mmc-hs400-1_8v;
- mmc-hs400-enhanced-strobe;
non-removable;
status = "okay";
};
--
2.25.1
