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mmc: dw_mmc: set host_caps mmc modes to equivalent buswidth and lower

PATCH New Jan Havran 1 participant 1 message Aug 31, 2018 MMC, SD and SDIO

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Jan Havran

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PATCH 1/1 mmc: dw_mmc: set host_caps mmc modes to equivalent buswidth and lower

dwmci_setup_cfg was clearing all modes except the mode equivalent to required bus width. Moreover, for buswidth = 1 was set the 4-bit mode.

This sets host caps to all modes from 1-bit up to required mode.

Signed-off-by Jan Havran <[email protected]>
---
 drivers/mmc/dw_mmc.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)
drivers/mmc/dw_mmc.c +6 -4
index 13180fc0d6..8aa8362359 100644
@@ -501,11 +501,13 @@ void dwmci_setup_cfg(struct mmc_config *cfg, struct dwmci_host *host,
 	cfg->host_caps = host->caps;
 
 	if (host->buswidth == 8) {
-		cfg->host_caps |= MMC_MODE_8BIT;
-		cfg->host_caps &= ~MMC_MODE_4BIT;
-	} else {
-		cfg->host_caps |= MMC_MODE_4BIT;
+		cfg->host_caps |= MMC_MODE_8BIT | MMC_MODE_4BIT | MMC_MODE_1BIT;
+	} else if (host->buswidth == 4) {
 		cfg->host_caps &= ~MMC_MODE_8BIT;
+		cfg->host_caps |= MMC_MODE_4BIT | MMC_MODE_1BIT;
+	} else {
+		cfg->host_caps &= ~MMC_MODE_8BIT & ~MMC_MODE_4BIT;
+		cfg->host_caps |= MMC_MODE_1BIT;
 	}
 	cfg->host_caps |= MMC_MODE_HS | MMC_MODE_HS_52MHz;
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2.18.0