From: Aniruddha Rao <anrao@nvidia.com>
To: Rob Herring <robh+dt@kernel.org>,
Thierry Reding <thierry.reding@gmail.com>,
Jonathan Hunter <jonathanh@nvidia.com>
Cc: <linux-tegra@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
"Aniruddha Rao" <anrao@nvidia.com>
Subject: [PATCH] arm64: tegra: Update SDMMC1/3 clock source for Tegra194
Date: Wed, 16 Mar 2022 15:14:45 +0530 [thread overview]
Message-ID: <1647423885-2569-1-git-send-email-anrao@nvidia.com> (raw)
The default parent for SDMMC1/3 clock sources can provide maximum frequency
of 136MHz for SDR104 mode.
Update parent clock source for SDMMC1/SDMMC3 instances
to increase the output clock frequency to 195MHz and improve the perf.
Signed-off-by: Aniruddha Rao <anrao@nvidia.com>
---
arch/arm64/boot/dts/nvidia/tegra194.dtsi | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
index aaa00da..a6e4b53 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
@@ -887,6 +887,11 @@
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>,
+ <&bpmp TEGRA194_CLK_PLLC4_VCO_DIV2>;
resets = <&bpmp TEGRA194_RESET_SDMMC1>;
reset-names = "sdhci";
interconnects = <&mc TEGRA194_MEMORY_CLIENT_SDMMCRA &emc>,
@@ -921,6 +926,11 @@
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>,
+ <&bpmp TEGRA194_CLK_PLLC4_VCO_DIV2>;
resets = <&bpmp TEGRA194_RESET_SDMMC3>;
reset-names = "sdhci";
interconnects = <&mc TEGRA194_MEMORY_CLIENT_SDMMCR &emc>,
--
2.7.4
next reply other threads:[~2022-03-16 9:45 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-16 9:44 Aniruddha Rao [this message]
2022-04-06 13:29 ` [PATCH] arm64: tegra: Update SDMMC1/3 clock source for Tegra194 Thierry Reding
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