linux-kernel - [PATCH v3 3/3] riscv: dts: starfive: add assigned-clock* to limit frquency

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Date:   Fri, 22 Sep 2023 14:28:34 +0800
From:   William Qiu <william.qiu@...rfivetech.com>
To:     <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-riscv@...ts.infradead.org>, <linux-mmc@...r.kernel.org>
CC:     Emil Renner Berthing <kernel@...il.dk>,
        Rob Herring <robh+dt@...nel.org>,
        Jaehoon Chung <jh80.chung@...sung.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        "Palmer Dabbelt" <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        William Qiu <william.qiu@...rfivetech.com>
Subject: [PATCH v3 3/3] riscv: dts: starfive: add assigned-clock* to limit frquency

In JH7110 SoC, we need to go by-pass mode, so we need add the
assigned-clock* properties to limit clock frquency.

Signed-off-by: William Qiu <william.qiu@...rfivetech.com>
---
 .../riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
index d79f94432b27..d1f2ec308bca 100644
--- a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
+++ b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
@@ -205,6 +205,8 @@ &i2c6 {
 
 &mmc0 {
 	max-frequency = <100000000>;
+	assigned-clocks = <&syscrg JH7110_SYSCLK_SDIO0_SDCARD>;
+	assigned-clock-rates = <50000000>;
 	bus-width = <8>;
 	cap-mmc-highspeed;
 	mmc-ddr-1_8v;
@@ -221,6 +223,8 @@ &mmc0 {
 
 &mmc1 {
 	max-frequency = <100000000>;
+	assigned-clocks = <&syscrg JH7110_SYSCLK_SDIO1_SDCARD>;
+	assigned-clock-rates = <50000000>;
 	bus-width = <4>;
 	no-sdio;
 	no-mmc;
-- 
2.34.1