linux-kernel - [PATCH v2 4/6] ARM: dts: sunxi: h3/h5: Update MBUS node

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Date:   Sun,  3 Oct 2021 20:27:37 -0500
From:   Samuel Holland <samuel@...lland.org>
To:     MyungJoo Ham <myungjoo.ham@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Maxime Ripard <mripard@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Rob Herring <robh+dt@...nel.org>
Cc:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-pm@...r.kernel.org,
        linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Samuel Holland <samuel@...lland.org>
Subject: [PATCH v2 4/6] ARM: dts: sunxi: h3/h5: Update MBUS node

In order to support memory dynamic frequency scaling (MDFS), the MBUS
binding now requires enumerating more resources. Provide them in the
device tree.

Since the H3 and H5 have different clock divider limits, they need
separate compatibles.

Signed-off-by: Samuel Holland <samuel@...lland.org>
---
 arch/arm/boot/dts/sun8i-h3.dtsi              |  4 ++++
 arch/arm/boot/dts/sunxi-h3-h5.dtsi           | 11 ++++++++---
 arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi |  4 ++++
 3 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/sun8i-h3.dtsi b/arch/arm/boot/dts/sun8i-h3.dtsi
index 4e89701df91f..43acb98cf390 100644
--- a/arch/arm/boot/dts/sun8i-h3.dtsi
+++ b/arch/arm/boot/dts/sun8i-h3.dtsi
@@ -282,6 +282,10 @@ &display_clocks {
 	compatible = "allwinner,sun8i-h3-de2-clk";
 };
 
+&mbus {
+	compatible = "allwinner,sun8i-h3-mbus";
+};
+
 &mmc0 {
 	compatible = "allwinner,sun7i-a20-mmc";
 	clocks = <&ccu CLK_BUS_MMC0>,
diff --git a/arch/arm/boot/dts/sunxi-h3-h5.dtsi b/arch/arm/boot/dts/sunxi-h3-h5.dtsi
index c7428df9469e..3a683e190dab 100644
--- a/arch/arm/boot/dts/sunxi-h3-h5.dtsi
+++ b/arch/arm/boot/dts/sunxi-h3-h5.dtsi
@@ -568,9 +568,14 @@ external_mdio: mdio@2 {
 		};
 
 		mbus: dram-controller@...2000 {
-			compatible = "allwinner,sun8i-h3-mbus";
-			reg = <0x01c62000 0x1000>;
-			clocks = <&ccu CLK_MBUS>;
+			/* compatible is in per SoC .dtsi file */
+			reg = <0x01c62000 0x1000>,
+			      <0x01c63000 0x1000>;
+			reg-names = "mbus", "dram";
+			clocks = <&ccu CLK_MBUS>,
+				 <&ccu CLK_DRAM>,
+				 <&ccu CLK_BUS_DRAM>;
+			clock-names = "mbus", "dram", "bus";
 			#address-cells = <1>;
 			#size-cells = <1>;
 			dma-ranges = <0x00000000 0x40000000 0xc0000000>;
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi
index 578a63dedf46..35d5d238e313 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi
@@ -233,6 +233,10 @@ &display_clocks {
 	compatible = "allwinner,sun50i-h5-de2-clk";
 };
 
+&mbus {
+	compatible = "allwinner,sun50i-h5-mbus";
+};
+
 &mmc0 {
 	compatible = "allwinner,sun50i-h5-mmc",
 		     "allwinner,sun50i-a64-mmc";
-- 
2.32.0