Buswidth is depeneded on Hardware schematic.
Evne though host can support the 8bit buswidth, if hardware doesn't
support 8bit mode, it doesn't work fine.
So the buswidth mode selection leaves a matter in each SoC drivers.
On the contrary to this, hardware supports 8bit mode, but host doesn't
support it. then controller has to disable the MMC_MODE_8BIT.
(Host can check whether 8bit mode is supported or not, since V3.0)
Signed-off-by: Jaehoon Chung <jh80.ch...@samsung.com>
---
drivers/mmc/sdhci.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index cbf5f56..853c268 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -594,14 +594,13 @@ int sdhci_setup_cfg(struct mmc_config *cfg, struct
sdhci_host *host,
cfg->host_caps = MMC_MODE_HS | MMC_MODE_HS_52MHz | MMC_MODE_4BIT;
if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) {
- if (caps & SDHCI_CAN_DO_8BIT)
- cfg->host_caps |= MMC_MODE_8BIT;
+ if (!(caps & SDHCI_CAN_DO_8BIT))
+ cfg->host_caps &= ~MMC_MODE_8BIT;
}
if (host->host_caps)
cfg->host_caps |= host->host_caps;
-
cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
/*
--
2.10.2
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
