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Message-Id: <20230629184318.551317-3-linux@fw-web.de>
Date: Thu, 29 Jun 2023 20:43:18 +0200
From: Frank Wunderlich <linux@...web.de>
To: linux-mediatek@...ts.infradead.org
Cc: Frank Wunderlich <frank-w@...lic-files.de>,
Chaotian Jing <chaotian.jing@...iatek.com>,
Ulf Hansson <ulf.hansson@...aro.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Matthias Brugger <matthias.bgg@...il.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>,
Wenbin Mei <wenbin.mei@...iatek.com>,
Sam Shih <sam.shih@...iatek.com>, linux-mmc@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
Eric Woudstra <ericwouds@...il.com>, stable@...r.kernel.org
Subject: [PATCH v2 2/2] arm64: dts: mt7986: fix emmc hs400 mode without uboot initialization
From: Eric Woudstra <ericwouds@...il.com>
Eric reports errors on emmc with hs400 mode when booting linux on bpi-r3
without uboot [1]. Booting with uboot does not show this because clocks
seem to be initialized by uboot.
Fix this by adding assigned-clocks and assigned-clock-parents like it's
done in uboot [2].
[1] https://forum.banana-pi.org/t/bpi-r3-kernel-fails-setting-emmc-clock-to-416m-depends-on-u-boot/15170
[2] https://github.com/u-boot/u-boot/blob/master/arch/arm/dts/mt7986.dtsi#L287
Cc: stable@...r.kernel.org
Fixes: 513b49d19b34 ("arm64: dts: mt7986: add mmc related device nodes")
Signed-off-by: Eric Woudstra <ericwouds@...il.com>
Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>
---
arch/arm64/boot/dts/mediatek/mt7986a.dtsi | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt7986a.dtsi b/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
index 68539ea788df..207510abda89 100644
--- a/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
@@ -374,6 +374,10 @@ mmc0: mmc@...30000 {
reg = <0 0x11230000 0 0x1000>,
<0 0x11c20000 0 0x1000>;
interrupts = <GIC_SPI 143 IRQ_TYPE_LEVEL_HIGH>;
+ assigned-clocks = <&topckgen CLK_TOP_EMMC_416M_SEL>,
+ <&topckgen CLK_TOP_EMMC_250M_SEL>;
+ assigned-clock-parents = <&apmixedsys CLK_APMIXED_MPLL>,
+ <&topckgen CLK_TOP_NET1PLL_D5_D2>;
clocks = <&topckgen CLK_TOP_EMMC_416M_SEL>,
<&infracfg CLK_INFRA_MSDC_HCK_CK>,
<&infracfg CLK_INFRA_MSDC_CK>,
--
2.34.1
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