This patch fixes incorrect settings for UHS mode in SD_MMC_HC_HOST_CTRL2 register for SDR50 and SDR25, of which the latter was missing. This field should be set to:
0x4 for DDR52 0x2 for SDR50 0x1 for SDR25 0x0 for others. This way EmmcSwitchToHighSpeed function is on par with Linux set_uhs_signaling routine in the Xenon driver. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Marcin Wojtas <[email protected]> Reviewed-by: Leif Lindholm <[email protected]> --- Platform/Marvell/Drivers/SdMmc/XenonDxe/EmmcDevice.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Platform/Marvell/Drivers/SdMmc/XenonDxe/EmmcDevice.c b/Platform/Marvell/Drivers/SdMmc/XenonDxe/EmmcDevice.c index 3f73194..4d4833f 100755 --- a/Platform/Marvell/Drivers/SdMmc/XenonDxe/EmmcDevice.c +++ b/Platform/Marvell/Drivers/SdMmc/XenonDxe/EmmcDevice.c @@ -772,6 +772,8 @@ EmmcSwitchToHighSpeed ( if (IsDdr) { HostCtrl2 = BIT2; } else if (ClockFreq == 52) { + HostCtrl2 = BIT1; + } else if (ClockFreq == 26) { HostCtrl2 = BIT0; } else { HostCtrl2 = 0; -- 2.7.4 _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
