This is a note to let you know that I've just added the patch titled
ARM: dts: everest: Add phase corrections for eMMC
to the 5.13-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm-dts-everest-add-phase-corrections-for-emmc.patch
and it can be found in the queue-5.13 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From faffd1b2bde3ee428d6891961f6a60f8e08749d6 Mon Sep 17 00:00:00 2001
From: Andrew Jeffery <andrew@xxxxxxxx>
Date: Mon, 28 Jun 2021 11:06:05 +0930
Subject: ARM: dts: everest: Add phase corrections for eMMC
From: Andrew Jeffery <andrew@xxxxxxxx>
commit faffd1b2bde3ee428d6891961f6a60f8e08749d6 upstream.
The values were determined experimentally via boot tests, not by
measuring the bus behaviour with a scope. We plan to do scope
measurements to confirm or refine the values and will update the
devicetree if necessary once these have been obtained.
However, with the patch we can write and read data without issue, where
as booting the system without the patch failed at the point of mounting
the rootfs.
Signed-off-by: Andrew Jeffery <andrew@xxxxxxxx>
Link: https://lore.kernel.org/r/20210628013605.1257346-1-andrew@xxxxxxxx
Fixes: 2fc88f92359d ("mmc: sdhci-of-aspeed: Expose clock phase controls")
Fixes: a5c5168478d7 ("ARM: dts: aspeed: Add Everest BMC machine")
Signed-off-by: Joel Stanley <joel@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts | 1 +
1 file changed, 1 insertion(+)
--- a/arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts
+++ b/arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts
@@ -1068,6 +1068,7 @@
&emmc {
status = "okay";
+ clk-phase-mmc-hs200 = <180>, <180>;
};
&fsim0 {
Patches currently in stable-queue which might be from andrew@xxxxxxxx are
queue-5.13/arm-dts-everest-add-phase-corrections-for-emmc.patch
queue-5.13/arm-dts-tacoma-add-phase-corrections-for-emmc.patch
