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mmc: rockchip_dw_mmc: Allow 4-bit mode when 8-bit mode is supported

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Hosts capable of 8-bit can also do 4 bits, fix use of 4-bit mode when
8-bit mode is supported.

This fixes use of 1-bit mode with SD NAND on ROCK Pi S using the DT in
v6.11-rc1 that chage to use 8-bit bus to also support eMMC. With this
4-bit mode is used with SD NAND and 8-bit mode with eMMC, same as in
Linux kernel.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
This commit is contained in:
Jonas Karlman
2024-07-24 06:55:36 +00:00
committed by Kever Yang
parent 0cb1fddb74
commit 2dc3600d36
1 changed files with 4 additions and 0 deletions
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4
drivers/mmc/rockchip_dw_mmc.c
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@@ -159,6 +159,10 @@ static int rockchip_dwmmc_probe(struct udevice *dev)
host->mmc->dev = dev;
upriv->mmc = host->mmc;
/* Hosts capable of 8-bit can also do 4 bits */
if (host->buswidth == 8)
plat->cfg.host_caps |= MMC_MODE_4BIT;
return dwmci_probe(dev);
}