[PATCH] Revert "mmc: rockchip_sdhci: Limit number of blocks read in a single command"

[Simon Glass]

This makes MMC extremely slow on bob. Even reading the environment takes
ages.

If there is a bug on a particular controller, it should be worked around
using the compatible string, e.g. with ->flags in struct sdhci_data -
althought I don't see any docs for the flags.

This reverts commit 2cc6cde647e2cf61a29f389e8d263bf19672f0f5.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 configs/rock5b-rk3588_defconfig | 1 -
 drivers/mmc/rockchip_sdhci.c    | 8 --------
 2 files changed, 9 deletions(-)

diff --git a/configs/rock5b-rk3588_defconfig b/configs/rock5b-rk3588_defconfig
index d3136ac850fe..3fcc6a26bb51 100644
--- a/configs/rock5b-rk3588_defconfig
+++ b/configs/rock5b-rk3588_defconfig
@@ -58,7 +58,6 @@ CONFIG_MMC_DW=y
 CONFIG_MMC_DW_ROCKCHIP=y
 CONFIG_MMC_SDHCI=y
 CONFIG_MMC_SDHCI_SDMA=y
-# CONFIG_SPL_MMC_SDHCI_SDMA is not set
 CONFIG_MMC_SDHCI_ROCKCHIP=y
 CONFIG_ETH_DESIGNWARE=y
 CONFIG_GMAC_ROCKCHIP=y
diff --git a/drivers/mmc/rockchip_sdhci.c b/drivers/mmc/rockchip_sdhci.c
index 4f110976f4e8..2857dcc9ec4f 100644
--- a/drivers/mmc/rockchip_sdhci.c
+++ b/drivers/mmc/rockchip_sdhci.c
@@ -589,14 +589,6 @@ static int rockchip_sdhci_probe(struct udevice *dev)
 	if (ret)
 		return ret;
 
-	/*
-	 * Reading more than 4 blocks with a single CMD18 command in PIO mode
-	 * triggers Data End Bit Error on RK3568 and RK3588. Limit to reading
-	 * max 4 blocks in one command when using PIO mode.
-	 */
-	if (!(host->flags & USE_DMA))
-		cfg->b_max = 4;
-
 	return sdhci_probe(dev);
 }
 
-- 
2.40.1.495.gc816e09b53d-goog