linux-kernel - [PATCH v3 2/5] arm64: tegra: Specify sdhci clock parent for Tegra194 SDMMC1 and SDMMC3

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Date:   Wed, 14 Oct 2020 19:56:24 +0200
From:   Tamás Szűcs <tszucs@...tonmail.ch>
To:     Rob Herring <robh+dt@...nel.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        JC Kuo <jckuo@...dia.com>, Vidya Sagar <vidyas@...dia.com>,
        Sameer Pujar <spujar@...dia.com>, devicetree@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Tamás Szűcs <tszucs@...tonmail.ch>
Subject: [PATCH v3 2/5] arm64: tegra: Specify sdhci clock parent for Tegra194 SDMMC1 and SDMMC3

Use PLLC4_MUXED as clock source for SDMMC1 and SDMMC3 core clocks. This enables
more suitable interface clocks for higher data rate modes.

Signed-off-by: Tamás Szűcs <tszucs@...tonmail.ch>
---
 arch/arm64/boot/dts/nvidia/tegra194.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
index 058fdb1ffa1a..7e3ceeb5bc43 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
@@ -701,6 +701,9 @@
 			clocks = <&bpmp TEGRA194_CLK_SDMMC1>,
 				 <&bpmp TEGRA194_CLK_SDMMC_LEGACY_TM>;
 			clock-names = "sdhci", "tmclk";
+			assigned-clocks = <&bpmp TEGRA194_CLK_SDMMC1>,
+					  <&bpmp TEGRA194_CLK_PLLC4_MUXED>;
+			assigned-clock-parents = <&bpmp TEGRA194_CLK_PLLC4_MUXED>;
 			resets = <&bpmp TEGRA194_RESET_SDMMC1>;
 			reset-names = "sdhci";
 			interconnects = <&mc TEGRA194_MEMORY_CLIENT_SDMMCRA &emc>,
@@ -739,6 +742,9 @@
 			clocks = <&bpmp TEGRA194_CLK_SDMMC3>,
 				 <&bpmp TEGRA194_CLK_SDMMC_LEGACY_TM>;
 			clock-names = "sdhci", "tmclk";
+			assigned-clocks = <&bpmp TEGRA194_CLK_SDMMC3>,
+					  <&bpmp TEGRA194_CLK_PLLC4_MUXED>;
+			assigned-clock-parents = <&bpmp TEGRA194_CLK_PLLC4_MUXED>;
 			resets = <&bpmp TEGRA194_RESET_SDMMC3>;
 			reset-names = "sdhci";
 			interconnects = <&mc TEGRA194_MEMORY_CLIENT_SDMMCR &emc>,
-- 
2.20.1