linux-kernel - [PATCH 3/3] ARM: dts: aspeed: wedge400: Set eMMC max frequency

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Message-Id: <20230803230324.731268-4-rentao.bupt@gmail.com>
Date:   Thu,  3 Aug 2023 16:03:24 -0700
From:   rentao.bupt@...il.com
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        taoren@...a.com
Cc:     Tao Ren <rentao.bupt@...il.com>
Subject: [PATCH 3/3] ARM: dts: aspeed: wedge400: Set eMMC max frequency

From: Tao Ren <rentao.bupt@...il.com>

Set eMMC max frequency to 25MHz to prevent intermittent eMMC access
failures.

Signed-off-by: Tao Ren <rentao.bupt@...il.com>
---
 arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-wedge400.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-wedge400.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-wedge400.dts
index 5c55afed946f..d17b977fee9b 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-wedge400.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-wedge400.dts
@@ -367,6 +367,7 @@ &uhci {
 };
 
 &sdhci1 {
+	max-frequency = <25000000>;
 	/*
 	 * DMA mode needs to be disabled to avoid conflicts with UHCI
 	 * Controller in AST2500 SoC.
-- 
2.40.1