linux-kernel - [PATCH v1 1/2] dt-bindings: clock: exynos990: Add CMU

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Message-ID: <20250528105252.157533-2-umer.uddin@mentallysanemainliners.org>
Date: Wed, 28 May 2025 11:52:51 +0100
From: Umer Uddin <umer.uddin@...tallysanemainliners.org>
To: Krzysztof Kozlowski <krzk@...nel.org>,
	Sylwester Nawrocki <s.nawrocki@...sung.com>,
	Chanwoo Choi <cw00.choi@...sung.com>,
	Alim Akhtar <alim.akhtar@...sung.com>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Igor Belwon <igor.belwon@...tallysanemainliners.org>
Cc: linux-samsung-soc@...r.kernel.org,
	linux-clk@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1 1/2] dt-bindings: clock: exynos990: Add CMU_HSI1 bindings

Add dt-schema documentation for the Exynos990 CMU_HSI1 block.

This clock management unit provides clocks for the DesignWare MMC
controller, PCIE subsystem and UFS subsystem.

Signed-off-by: Umer Uddin <umer.uddin@...tallysanemainliners.org>
---
 .../clock/samsung,exynos990-clock.yaml        | 27 +++++++++++++++++++
 include/dt-bindings/clock/samsung,exynos990.h |  7 +++++
 2 files changed, 34 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/samsung,exynos990-clock.yaml b/Documentation/devicetree/bindings/clock/samsung,exynos990-clock.yaml
index c15cc1752..ce3b845ce 100644
--- a/Documentation/devicetree/bindings/clock/samsung,exynos990-clock.yaml
+++ b/Documentation/devicetree/bindings/clock/samsung,exynos990-clock.yaml
@@ -31,6 +31,7 @@ properties:
   compatible:
     enum:
       - samsung,exynos990-cmu-hsi0
+      - samsung,exynos990-cmu-hsi1
       - samsung,exynos990-cmu-peris
       - samsung,exynos990-cmu-top
 
@@ -80,6 +81,32 @@ allOf:
             - const: usbdp_debug
             - const: dpgtc
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: samsung,exynos990-cmu-hsi1
+
+    then:
+      properties:
+        clocks:
+          items:
+            - description: External reference clock (26 MHz)
+            - description: CMU_HSI1 BUS clock (from CMU_TOP)
+            - description: CMU_HSI1 MMC_CARD clock (from CMU_TOP)
+            - description: CMU_HSI1 PCIE clock (from CMU_TOP)
+            - description: CMU_HSI1 UFS_CARD clock (from CMU_TOP)
+            - description: CMU_HSI1 UFS_EMBD clock (from CMU_TOP)
+
+        clock-names:
+          items:
+            - const: oscclk
+            - const: bus
+            - const: mmc_card
+            - const: pcie
+            - const: ufs_card
+            - const: ufs_embd
+
   - if:
       properties:
         compatible:
diff --git a/include/dt-bindings/clock/samsung,exynos990.h b/include/dt-bindings/clock/samsung,exynos990.h
index 6b9df09d2..3164cca44 100644
--- a/include/dt-bindings/clock/samsung,exynos990.h
+++ b/include/dt-bindings/clock/samsung,exynos990.h
@@ -254,4 +254,11 @@
 #define CLK_GOUT_PERIS_OTP_CON_BIRA_OSCCLK	18
 #define CLK_GOUT_PERIS_OTP_CON_TOP_OSCCLK	19
 
+/* CMU_HSI1 */
+#define CLK_MOUT_HSI1_BUS_USER		1
+#define CLK_MOUT_HSI1_MMC_CARD_USER	2
+#define CLK_MOUT_HSI1_PCIE_USER		3
+#define CLK_MOUT_HSI1_UFS_CARD_USER	4
+#define CLK_MOUT_HSI1_UFS_EMBD_USER	5
+
 #endif
-- 
2.47.2