[PATCH 0/3] Add clock support for CMU_MFD

[PATCH 0/3] Add clock support for CMU_MFD

[Raghav Sharma]

This series adds clock support for the CMU_MFD block.
MFD stands for Multi-Format Decoder

Patch[1/3]: dt-bindings: clock: exynosautov920: add mfd clock definitions
        - Adds DT binding for CMU_MFD and clock definitions

Patch[2/3]: clk: samsung: exynosautov920: add block mfd clock support
        - Adds CMU_MFD clock driver support

Patch[3/3]: arm64: dts: exynosautov920: add CMU_MFD clock DT nodes
        - Adds dt node for CMU_MFD

Signed-off-by: Raghav Sharma <raghav.s@samsung.com>
---
Raghav Sharma (3):
  dt-bindings: clock: exynosautov920: add mfd clock definitions
  clk: samsung: exynosautov920: add block mfd clock support
  arm64: dts: exynosautov920: add cmu_mfd clock DT nodes

 .../clock/samsung,exynosautov920-clock.yaml   | 19 +++++++++
 .../arm64/boot/dts/exynos/exynosautov920.dtsi | 11 +++++
 drivers/clk/samsung/clk-exynosautov920.c      | 40 +++++++++++++++++++
 .../clock/samsung,exynosautov920.h            |  4 ++
 4 files changed, 74 insertions(+)


base-commit: fe4d0dea039f2befb93f27569593ec209843b0f5
-- 
2.34.1

[PATCH 1/3] dt-bindings: clock: exynosautov920: add MFD clock definitions

[Raghav Sharma]

Add device tree clock binding definitions for CMU_MFD

Signed-off-by: Raghav Sharma <raghav.s@samsung.com>
---
 .../clock/samsung,exynosautov920-clock.yaml   | 19 +++++++++++++++++++
 .../clock/samsung,exynosautov920.h            |  4 ++++
 2 files changed, 23 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/samsung,exynosautov920-clock.yaml b/Documentation/devicetree/bindings/clock/samsung,exynosautov920-clock.yaml
index 5bf905f88a1a..1318720193b3 100644
--- a/Documentation/devicetree/bindings/clock/samsung,exynosautov920-clock.yaml
+++ b/Documentation/devicetree/bindings/clock/samsung,exynosautov920-clock.yaml
@@ -40,6 +40,7 @@ properties:
       - samsung,exynosautov920-cmu-hsi2
       - samsung,exynosautov920-cmu-m2m
       - samsung,exynosautov920-cmu-mfc
+      - samsung,exynosautov920-cmu-mfd
       - samsung,exynosautov920-cmu-misc
       - samsung,exynosautov920-cmu-peric0
       - samsung,exynosautov920-cmu-peric1
@@ -268,6 +269,24 @@ allOf:
             - const: mfc
             - const: wfd
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: samsung,exynosautov920-cmu-mfd
+
+    then:
+      properties:
+        clocks:
+          items:
+            - description: External reference clock (38.4 MHz)
+            - description: CMU_MFD NOC clock (from CMU_TOP)
+
+        clock-names:
+          items:
+            - const: oscclk
+            - const: noc
+
 required:
   - compatible
   - "#clock-cells"
diff --git a/include/dt-bindings/clock/samsung,exynosautov920.h b/include/dt-bindings/clock/samsung,exynosautov920.h
index 970d05167fc6..06dec27a8c77 100644
--- a/include/dt-bindings/clock/samsung,exynosautov920.h
+++ b/include/dt-bindings/clock/samsung,exynosautov920.h
@@ -305,4 +305,8 @@
 #define CLK_MOUT_MFC_WFD_USER           2
 #define CLK_DOUT_MFC_NOCP               3
 
+/* CMU_MFD */
+#define CLK_MOUT_MFD_NOC_USER           1
+#define CLK_DOUT_MFD_NOCP               2
+
 #endif /* _DT_BINDINGS_CLOCK_EXYNOSAUTOV920_H */
-- 
2.34.1

Re: [PATCH 1/3] dt-bindings: clock: exynosautov920: add MFD clock definitions

[Rob Herring (Arm)]

On Wed, 19 Nov 2025 17:17:42 +0530, Raghav Sharma wrote:
> Add device tree clock binding definitions for CMU_MFD
> 
> Signed-off-by: Raghav Sharma <raghav.s@samsung.com>
> ---
>  .../clock/samsung,exynosautov920-clock.yaml   | 19 +++++++++++++++++++
>  .../clock/samsung,exynosautov920.h            |  4 ++++
>  2 files changed, 23 insertions(+)
> 

Acked-by: Rob Herring (Arm) <robh@kernel.org>

RE: [PATCH 1/3] dt-bindings: clock: exynosautov920: add MFD clock definitions

[Alim Akhtar]

Hi Raghav

> -----Original Message-----
> From: Raghav Sharma <raghav.s@samsung.com>
> Sent: Wednesday, November 19, 2025 5:18 PM
> To: krzk@kernel.org; s.nawrocki@samsung.com; cw00.choi@samsung.com;
> alim.akhtar@samsung.com; mturquette@baylibre.com; sboyd@kernel.org;
> robh@kernel.org; conor+dt@kernel.org; sunyeal.hong@samsung.com;
> shin.son@samsung.com
> Cc: linux-samsung-soc@vger.kernel.org; linux-clk@vger.kernel.org;
> devicetree@vger.kernel.org; linux-arm-kernel@lists.infradead.org; linux-
> kernel@vger.kernel.org; chandan.vn@samsung.com;
> dev.tailor@samsung.com; karthik.sun@samsung.com; Raghav Sharma
> <raghav.s@samsung.com>
> Subject: [PATCH 1/3] dt-bindings: clock: exynosautov920: add MFD clock
> definitions
> 
> Add device tree clock binding definitions for CMU_MFD
> 
> Signed-off-by: Raghav Sharma <raghav.s@samsung.com>
> ---

Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>

[PATCH 2/3] clk: samsung: exynosautov920: add clock support

[Raghav Sharma]

Add support for CMU_MFD which provides clocks to MFD block, and
register the required compatible and cmu_info for the same.

Signed-off-by: Raghav Sharma <raghav.s@samsung.com>
---
 drivers/clk/samsung/clk-exynosautov920.c | 40 ++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/drivers/clk/samsung/clk-exynosautov920.c b/drivers/clk/samsung/clk-exynosautov920.c
index b90b73c3518f..d0617c7fff3a 100644
--- a/drivers/clk/samsung/clk-exynosautov920.c
+++ b/drivers/clk/samsung/clk-exynosautov920.c
@@ -29,6 +29,7 @@
 #define CLKS_NR_HSI2			(CLK_DOUT_HSI2_ETHERNET_PTP + 1)
 #define CLKS_NR_M2M                     (CLK_DOUT_M2M_NOCP + 1)
 #define CLKS_NR_MFC                     (CLK_DOUT_MFC_NOCP + 1)
+#define CLKS_NR_MFD                     (CLK_DOUT_MFD_NOCP + 1)
 
 /* ---- CMU_TOP ------------------------------------------------------------ */
 
@@ -1905,6 +1906,42 @@ static const struct samsung_cmu_info mfc_cmu_info __initconst = {
 	.clk_name               = "noc",
 };
 
+/* ---- CMU_MFD --------------------------------------------------------- */
+
+/* Register Offset definitions for CMU_MFD (0x19e00000) */
+#define PLL_CON0_MUX_CLKCMU_MFD_NOC_USER        0x600
+#define CLK_CON_DIV_DIV_CLK_MFD_NOCP            0x1800
+
+static const unsigned long mfd_clk_regs[] __initconst = {
+	PLL_CON0_MUX_CLKCMU_MFD_NOC_USER,
+	CLK_CON_DIV_DIV_CLK_MFD_NOCP,
+};
+
+/* List of parent clocks for Muxes in CMU_MFD */
+PNAME(mout_clkcmu_mfd_noc_user_p) = { "oscclk", "dout_clkcmu_mfd_noc" };
+
+static const struct samsung_mux_clock mfd_mux_clks[] __initconst = {
+	MUX(CLK_MOUT_MFD_NOC_USER, "mout_clkcmu_mfd_noc_user",
+	    mout_clkcmu_mfd_noc_user_p, PLL_CON0_MUX_CLKCMU_MFD_NOC_USER, 4, 1),
+};
+
+static const struct samsung_div_clock mfd_div_clks[] __initconst = {
+	DIV(CLK_DOUT_MFD_NOCP, "dout_mfd_nocp",
+	    "mout_clkcmu_mfd_noc_user", CLK_CON_DIV_DIV_CLK_MFD_NOCP,
+	    0, 3),
+};
+
+static const struct samsung_cmu_info mfd_cmu_info __initconst = {
+	.mux_clks               = mfd_mux_clks,
+	.nr_mux_clks            = ARRAY_SIZE(mfd_mux_clks),
+	.div_clks               = mfd_div_clks,
+	.nr_div_clks            = ARRAY_SIZE(mfd_div_clks),
+	.nr_clk_ids             = CLKS_NR_MFD,
+	.clk_regs               = mfd_clk_regs,
+	.nr_clk_regs            = ARRAY_SIZE(mfd_clk_regs),
+	.clk_name               = "noc",
+};
+
 static int __init exynosautov920_cmu_probe(struct platform_device *pdev)
 {
 	const struct samsung_cmu_info *info;
@@ -1941,6 +1978,9 @@ static const struct of_device_id exynosautov920_cmu_of_match[] = {
 	}, {
 		.compatible = "samsung,exynosautov920-cmu-mfc",
 		.data = &mfc_cmu_info,
+	}, {
+		.compatible = "samsung,exynosautov920-cmu-mfd",
+		.data = &mfd_cmu_info,
 	},
 	{ }
 };
-- 
2.34.1

RE: [PATCH 2/3] clk: samsung: exynosautov920: add clock support

[Alim Akhtar]

Hi Raghav

> -----Original Message-----
> From: Raghav Sharma <raghav.s@samsung.com>
> Sent: Wednesday, November 19, 2025 5:18 PM
> To: krzk@kernel.org; s.nawrocki@samsung.com; cw00.choi@samsung.com;
> alim.akhtar@samsung.com; mturquette@baylibre.com; sboyd@kernel.org;
> robh@kernel.org; conor+dt@kernel.org; sunyeal.hong@samsung.com;
> shin.son@samsung.com
> Cc: linux-samsung-soc@vger.kernel.org; linux-clk@vger.kernel.org;
> devicetree@vger.kernel.org; linux-arm-kernel@lists.infradead.org; linux-
> kernel@vger.kernel.org; chandan.vn@samsung.com;
> dev.tailor@samsung.com; karthik.sun@samsung.com; Raghav Sharma
> <raghav.s@samsung.com>
> Subject: [PATCH 2/3] clk: samsung: exynosautov920: add clock support
> 
> Add support for CMU_MFD which provides clocks to MFD block, and register
> the required compatible and cmu_info for the same.
> 
> Signed-off-by: Raghav Sharma <raghav.s@samsung.com>
> ---
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>

[PATCH 3/3] arm64: dts: exynosautov920: add CMU_MFD clock DT nodes

[Raghav Sharma]

Add required dt node for cmu_mfd block, which provides
clocks for MFD IP

Signed-off-by: Raghav Sharma <raghav.s@samsung.com>
---
 arch/arm64/boot/dts/exynos/exynosautov920.dtsi | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm64/boot/dts/exynos/exynosautov920.dtsi b/arch/arm64/boot/dts/exynos/exynosautov920.dtsi
index 6ee74d260776..02bf2ca52fdc 100644
--- a/arch/arm64/boot/dts/exynos/exynosautov920.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynosautov920.dtsi
@@ -1462,6 +1462,17 @@ cmu_mfc: clock-controller@19c00000 {
 				      "wfd";
 		};
 
+		cmu_mfd: clock-controller@19e00000 {
+			compatible = "samsung,exynosautov920-cmu-mfd";
+			reg = <0x19e00000 0x8000>;
+			#clock-cells = <1>;
+
+			clocks = <&xtcxo>,
+				 <&cmu_top DOUT_CLKCMU_MFD_NOC>;
+			clock-names = "oscclk",
+				      "noc";
+		};
+
 		pinctrl_aud: pinctrl@1a460000 {
 			compatible = "samsung,exynosautov920-pinctrl";
 			reg = <0x1a460000 0x10000>;
-- 
2.34.1

RE: [PATCH 3/3] arm64: dts: exynosautov920: add CMU_MFD clock DT nodes

[Alim Akhtar]

Hello Raghav

> -----Original Message-----
> From: Raghav Sharma <raghav.s@samsung.com>
> Sent: Wednesday, November 19, 2025 5:18 PM
> To: krzk@kernel.org; s.nawrocki@samsung.com; cw00.choi@samsung.com;
> alim.akhtar@samsung.com; mturquette@baylibre.com; sboyd@kernel.org;
> robh@kernel.org; conor+dt@kernel.org; sunyeal.hong@samsung.com;
> shin.son@samsung.com
> Cc: linux-samsung-soc@vger.kernel.org; linux-clk@vger.kernel.org;
> devicetree@vger.kernel.org; linux-arm-kernel@lists.infradead.org; linux-
> kernel@vger.kernel.org; chandan.vn@samsung.com;
> dev.tailor@samsung.com; karthik.sun@samsung.com; Raghav Sharma
> <raghav.s@samsung.com>
> Subject: [PATCH 3/3] arm64: dts: exynosautov920: add CMU_MFD clock DT
> nodes
> 
> Add required dt node for cmu_mfd block, which provides clocks for MFD IP
> 
> Signed-off-by: Raghav Sharma <raghav.s@samsung.com>
> ---
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>

Re: (subset) [PATCH 0/3] Add clock support for CMU_MFD

[Krzysztof Kozlowski]

On Wed, 19 Nov 2025 17:17:41 +0530, Raghav Sharma wrote:
> This series adds clock support for the CMU_MFD block.
> MFD stands for Multi-Format Decoder
> 
> Patch[1/3]: dt-bindings: clock: exynosautov920: add mfd clock definitions
>         - Adds DT binding for CMU_MFD and clock definitions
> 
> Patch[2/3]: clk: samsung: exynosautov920: add block mfd clock support
>         - Adds CMU_MFD clock driver support
> 
> [...]

Applied, thanks!

[1/3] dt-bindings: clock: exynosautov920: add MFD clock definitions
      https://git.kernel.org/krzk/linux/c/db1cc4902f2f51977e427f796ea8daf49ba93c69
[2/3] clk: samsung: exynosautov920: add clock support
      https://git.kernel.org/krzk/linux/c/efa45bcc73e1a30705eed28933e341d36a08bb84

Best regards,
-- 
Krzysztof Kozlowski <krzk@kernel.org>

Re: (subset) [PATCH 0/3] Add clock support for CMU_MFD

[Krzysztof Kozlowski]

On Wed, 19 Nov 2025 17:17:41 +0530, Raghav Sharma wrote:
> This series adds clock support for the CMU_MFD block.
> MFD stands for Multi-Format Decoder
> 
> Patch[1/3]: dt-bindings: clock: exynosautov920: add mfd clock definitions
>         - Adds DT binding for CMU_MFD and clock definitions
> 
> Patch[2/3]: clk: samsung: exynosautov920: add block mfd clock support
>         - Adds CMU_MFD clock driver support
> 
> [...]

Applied, thanks!

[3/3] arm64: dts: exynosautov920: add CMU_MFD clock DT nodes
      https://git.kernel.org/krzk/linux/c/abc6930a3150003e1a436e906ffd1cafd679acfc

Best regards,
-- 
Krzysztof Kozlowski <krzk@kernel.org>