armbian_build/patch/kernel/archive/sunxi-5.15/megous/mmc-add-delay-after-power-class-selection.patch
The-going 33c413c679
Patches megous 5.15.5 (#3295)
* Rework patches for sunxi 5.15.4

* Rework patches sunxi for 5.15.5

* Kernel switch tag=v5.15.5 for sunxi EDGE

* Temporarily disabled, requires rework.

drivers/clk/sunxi-ng/sun8i-de33.c: In function ‘sunxi_de33_clk_probe’:
drivers/clk/sunxi-ng/sun8i-de33.c:155:8:
 error: implicit declaration of function ‘sunxi_ccu_probe’;
 did you mean ‘of_sunxi_ccu_probe’? [-Werror=implicit-function-declarati>
  ret = sunxi_ccu_probe(pdev->dev.of_node, reg, ccu_desc);
        ^~~~~~~~~~~~~~~
        of_sunxi_ccu_probe
cc1: some warnings being treated as errors
make[3]: *** [scripts/Makefile.build:277:
         drivers/clk/sunxi-ng/sun8i-de33.o] Error 1
make[2]: *** [scripts/Makefile.build:540: drivers/clk/sunxi-ng] Error 2

* Correct the comment.
2021-11-28 16:48:47 +01:00

39 lines
1.0 KiB
Diff

From 0c1d59398dbb829cb1443775b456a2d73f98b5c7 Mon Sep 17 00:00:00 2001
From: Ondrej Jirman <megous@megous.com>
Date: Fri, 16 Mar 2018 20:31:55 +0100
Subject: [PATCH 141/467] mmc: add delay after power class selection
This seems to fix issue with sporadic ETIMEOUT in eMMC cache
initialization on second generation TBS A711 tablet.
Signed-off-by: Ondrej Jirman <megous@megous.com>
---
drivers/mmc/core/mmc.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 29e58ffae..82d58d9ec 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -1798,6 +1798,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
*/
mmc_select_powerclass(card);
+ msleep(20);
+
/*
* Enable HPI feature (if supported)
*/
@@ -1816,6 +1818,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
}
}
+ msleep(20);
+
/*
* If cache size is higher than 0, this indicates the existence of cache
* and it can be turned on. Note that some eMMCs from Micron has been
--
2.34.0