linux-kernel - [PATCH v2 2/4] arm64: dts: exynos: gs101: add samsung,sysreg property to CMU nodes

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Message-Id: <20251029-automatic-clocks-v2-2-f8edd3a2d82b@linaro.org>
Date: Wed, 29 Oct 2025 21:29:23 +0000
From: Peter Griffin <peter.griffin@...aro.org>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Alim Akhtar <alim.akhtar@...sung.com>, 
 André Draszik <andre.draszik@...aro.org>, 
 Tudor Ambarus <tudor.ambarus@...aro.org>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Sam Protsenko <semen.protsenko@...aro.org>, 
 Sylwester Nawrocki <s.nawrocki@...sung.com>, 
 Chanwoo Choi <cw00.choi@...sung.com>
Cc: Will McVicker <willmcvicker@...gle.com>, 
 Krzysztof Kozlowski <krzk@...nel.org>, devicetree@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org, 
 kernel-team@...roid.com, Peter Griffin <peter.griffin@...aro.org>, 
 Krzysztof Kozlowski <krzk@...nel.org>
Subject: [PATCH v2 2/4] arm64: dts: exynos: gs101: add samsung,sysreg
 property to CMU nodes

sysreg bank contains BUSCOMPONENT_DRCG_EN and MEMCLK clock registers that
need to be initialized in the CMU clock driver.

Signed-off-by: Peter Griffin <peter.griffin@...aro.org>
---
 arch/arm64/boot/dts/exynos/google/gs101.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/exynos/google/gs101.dtsi b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
index d06d1d05f36408137a8acd98e43d48ea7d4f4292..c39ca4c4508f046ca16ae86be42468c7245561b8 100644
--- a/arch/arm64/boot/dts/exynos/google/gs101.dtsi
+++ b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
@@ -578,6 +578,7 @@ cmu_misc: clock-controller@...10000 {
 			clocks = <&cmu_top CLK_DOUT_CMU_MISC_BUS>,
 				 <&cmu_top CLK_DOUT_CMU_MISC_SSS>;
 			clock-names = "bus", "sss";
+			samsung,sysreg = <&sysreg_misc>;
 		};
 
 		sysreg_misc: syscon@...30000 {
@@ -662,6 +663,7 @@ cmu_peric0: clock-controller@...00000 {
 				 <&cmu_top CLK_DOUT_CMU_PERIC0_BUS>,
 				 <&cmu_top CLK_DOUT_CMU_PERIC0_IP>;
 			clock-names = "oscclk", "bus", "ip";
+			samsung,sysreg = <&sysreg_peric0>;
 		};
 
 		sysreg_peric0: syscon@...20000 {
@@ -1208,6 +1210,7 @@ cmu_peric1: clock-controller@...00000 {
 				 <&cmu_top CLK_DOUT_CMU_PERIC1_BUS>,
 				 <&cmu_top CLK_DOUT_CMU_PERIC1_IP>;
 			clock-names = "oscclk", "bus", "ip";
+			samsung,sysreg = <&sysreg_peric1>;
 		};
 
 		sysreg_peric1: syscon@...20000 {
@@ -1566,6 +1569,7 @@ cmu_hsi0: clock-controller@...00000 {
 				 <&cmu_top CLK_DOUT_CMU_HSI0_USBDPDBG>;
 			clock-names = "oscclk", "bus", "dpgtc", "usb31drd",
 				      "usbdpdbg";
+			samsung,sysreg = <&sysreg_hsi0>;
 		};
 
 		sysreg_hsi0: syscon@...20000 {
@@ -1637,6 +1641,7 @@ cmu_hsi2: clock-controller@...00000 {
 				 <&cmu_top CLK_DOUT_CMU_HSI2_UFS_EMBD>,
 				 <&cmu_top CLK_DOUT_CMU_HSI2_MMC_CARD>;
 			clock-names = "oscclk", "bus", "pcie", "ufs", "mmc";
+			samsung,sysreg = <&sysreg_hsi2>;
 		};
 
 		sysreg_hsi2: syscon@...20000 {
@@ -1697,6 +1702,7 @@ cmu_apm: clock-controller@...00000 {
 
 			clocks = <&ext_24_5m>;
 			clock-names = "oscclk";
+			samsung,sysreg = <&sysreg_apm>;
 		};
 
 		sysreg_apm: syscon@...20000 {

-- 
2.51.1.851.g4ebd6896fd-goog