[PATCH 6/9] ARM: dts: stm32m1: add reg for pll nodes

28 Jan 2020

Fix the following DT dtc warnings for stm32mp1 boards:
Warning (unit_address_vs_reg): /soc/rcc@50000000/st,pll@0:
  node has a unit name, but no reg property
Warning (unit_address_vs_reg): /soc/rcc@50000000/st,pll@1:
  node has a unit name, but no reg property
Warning (unit_address_vs_reg): /soc/rcc@50000000/st,pll@2:
  node has a unit name, but no reg property
Warning (unit_address_vs_reg): /soc/rcc@50000000/st,pll@3:
  node has a unit name, but no reg property
Signed-off-by: Patrick Delaunay patrick.delaunay@st.com
---
arch/arm/dts/stm32mp157-u-boot.dtsi           |  2 ++
 .../arm/dts/stm32mp157a-avenger96-u-boot.dtsi |  8 +++++
 arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi      |  8 +++++
 arch/arm/dts/stm32mp157c-ed1-u-boot.dtsi      |  8 +++++
 arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi    |  8 +++++
 .../clock/st,stm32mp1.txt                     | 32 ++++++++++++++++---
 6 files changed, 62 insertions(+), 4 deletions(-)

diff --git a/arch/arm/dts/stm32mp157-u-boot.dtsi b/arch/arm/dts/stm32mp157-u-boot.dtsi
index cb8d60e33d..8f9535a4db 100644
--- a/arch/arm/dts/stm32mp157-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp157-u-boot.dtsi
@@ -134,6 +134,8 @@
&rcc {
    u-boot,dm-pre-reloc;
+	#address-cells = <1>;
+	#size-cells = <0>;
 };
&sdmmc1 {
diff --git a/arch/arm/dts/stm32mp157a-avenger96-u-boot.dtsi b/arch/arm/dts/stm32mp157a-avenger96-u-boot.dtsi
index d8a4617d90..d6dc746365 100644
--- a/arch/arm/dts/stm32mp157a-avenger96-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp157a-avenger96-u-boot.dtsi
@@ -105,6 +105,8 @@
/* VCO = 1300.0 MHz => P = 650 (CPU) */
    pll1: st,pll@0 {
+		compatible = "st,stm32mp1-pll";
+		reg = <0>;
    	cfg = < 2 80 0 0 0 PQR(1,0,0) >;
    	frac = < 0x800 >;
    	u-boot,dm-pre-reloc;
@@ -112,6 +114,8 @@
/* VCO = 1066.0 MHz => P = 266 (AXI), Q = 533 (GPU), R = 533 (DDR) */
    pll2: st,pll@1 {
+		compatible = "st,stm32mp1-pll";
+		reg = <1>;
    	cfg = < 2 65 1 0 0 PQR(1,1,1) >;
    	frac = < 0x1400 >;
    	u-boot,dm-pre-reloc;
@@ -119,6 +123,8 @@
/* VCO = 417.8 MHz => P = 209, Q = 24, R = 11 */
    pll3: st,pll@2 {
+		compatible = "st,stm32mp1-pll";
+		reg = <2>;
    	cfg = < 1 33 1 16 36 PQR(1,1,1) >;
    	frac = < 0x1a04 >;
    	u-boot,dm-pre-reloc;
@@ -126,6 +132,8 @@
/* VCO = 480.0 MHz => P = 120, Q = 40, R = 96 */
    pll4: st,pll@3 {
+		compatible = "st,stm32mp1-pll";
+		reg = <3>;
    	cfg = < 1 39 3 11 4 PQR(1,1,1) >;
    	u-boot,dm-pre-reloc;
    };
diff --git a/arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi b/arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi
index a7a125c087..a5cc01dd19 100644
--- a/arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi
@@ -124,6 +124,8 @@
/* VCO = 1300.0 MHz => P = 650 (CPU) */
    pll1: st,pll@0 {
+		compatible = "st,stm32mp1-pll";
+		reg = <0>;
    	cfg = < 2 80 0 0 0 PQR(1,0,0) >;
    	frac = < 0x800 >;
    	u-boot,dm-pre-reloc;
@@ -131,6 +133,8 @@
/* VCO = 1066.0 MHz => P = 266 (AXI), Q = 533 (GPU), R = 533 (DDR) */
    pll2: st,pll@1 {
+		compatible = "st,stm32mp1-pll";
+		reg = <1>;
    	cfg = < 2 65 1 0 0 PQR(1,1,1) >;
    	frac = < 0x1400 >;
    	u-boot,dm-pre-reloc;
@@ -138,6 +142,8 @@
/* VCO = 417.8 MHz => P = 209, Q = 24, R = 11 */
    pll3: st,pll@2 {
+		compatible = "st,stm32mp1-pll";
+		reg = <2>;
    	cfg = < 1 33 1 16 36 PQR(1,1,1) >;
    	frac = < 0x1a04 >;
    	u-boot,dm-pre-reloc;
@@ -145,6 +151,8 @@
/* VCO = 594.0 MHz => P = 99, Q = 74, R = 74 */
    pll4: st,pll@3 {
+		compatible = "st,stm32mp1-pll";
+		reg = <3>;
    	cfg = < 3 98 5 7 7 PQR(1,1,1) >;
    	u-boot,dm-pre-reloc;
    };
diff --git a/arch/arm/dts/stm32mp157c-ed1-u-boot.dtsi b/arch/arm/dts/stm32mp157c-ed1-u-boot.dtsi
index 32d95b84e7..347edf7e58 100644
--- a/arch/arm/dts/stm32mp157c-ed1-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp157c-ed1-u-boot.dtsi
@@ -121,6 +121,8 @@
/* VCO = 1300.0 MHz => P = 650 (CPU) */
    pll1: st,pll@0 {
+		compatible = "st,stm32mp1-pll";
+		reg = <0>;
    	cfg = < 2 80 0 0 0 PQR(1,0,0) >;
    	frac = < 0x800 >;
    	u-boot,dm-pre-reloc;
@@ -128,6 +130,8 @@
/* VCO = 1066.0 MHz => P = 266 (AXI), Q = 533 (GPU), R = 533 (DDR) */
    pll2: st,pll@1 {
+		compatible = "st,stm32mp1-pll";
+		reg = <1>;
    	cfg = < 2 65 1 0 0 PQR(1,1,1) >;
    	frac = < 0x1400 >;
    	u-boot,dm-pre-reloc;
@@ -135,6 +139,8 @@
/* VCO = 417.8 MHz => P = 209, Q = 24, R = 11 */
    pll3: st,pll@2 {
+		compatible = "st,stm32mp1-pll";
+		reg = <2>;
    	cfg = < 1 33 1 16 36 PQR(1,1,1) >;
    	frac = < 0x1a04 >;
    	u-boot,dm-pre-reloc;
@@ -142,6 +148,8 @@
/* VCO = 594.0 MHz => P = 99, Q = 74, R = 74 */
    pll4: st,pll@3 {
+		compatible = "st,stm32mp1-pll";
+		reg = <3>;
    	cfg = < 3 98 5 7 7 PQR(1,1,1) >;
    	u-boot,dm-pre-reloc;
    };
diff --git a/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi b/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi
index 21aa4bfb86..6c952a57ee 100644
--- a/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi
@@ -156,6 +156,8 @@
/* VCO = 1300.0 MHz => P = 650 (CPU) */
    pll1: st,pll@0 {
+		compatible = "st,stm32mp1-pll";
+		reg = <0>;
    	cfg = < 2 80 0 0 0 PQR(1,0,0) >;
    	frac = < 0x800 >;
    	u-boot,dm-pre-reloc;
@@ -163,6 +165,8 @@
/* VCO = 1066.0 MHz => P = 266 (AXI), Q = 533 (GPU), R = 533 (DDR) */
    pll2: st,pll@1 {
+		compatible = "st,stm32mp1-pll";
+		reg = <1>;
    	cfg = < 2 65 1 0 0 PQR(1,1,1) >;
    	frac = < 0x1400 >;
    	u-boot,dm-pre-reloc;
@@ -170,6 +174,8 @@
/* VCO = 417.8 MHz => P = 209, Q = 24, R = 11 */
    pll3: st,pll@2 {
+		compatible = "st,stm32mp1-pll";
+		reg = <2>;
    	cfg = < 1 33 1 16 36 PQR(1,1,1) >;
    	frac = < 0x1a04 >;
    	u-boot,dm-pre-reloc;
@@ -177,6 +183,8 @@
/* VCO = 600.0 MHz => P = 50, Q = 50, R = 50 */
    pll4: st,pll@3 {
+		compatible = "st,stm32mp1-pll";
+		reg = <3>;
    	cfg = < 1 49 11 11 11 PQR(1,1,1) >;
    	u-boot,dm-pre-reloc;
    };
diff --git a/doc/device-tree-bindings/clock/st,stm32mp1.txt b/doc/device-tree-bindings/clock/st,stm32mp1.txt
index ec1d703f34..a3d427911d 100644
--- a/doc/device-tree-bindings/clock/st,stm32mp1.txt
+++ b/doc/device-tree-bindings/clock/st,stm32mp1.txt
@@ -12,6 +12,9 @@ describes the fields added for clock tree initialization which are not present
 in Linux binding for compatible "st,stm32mp1-rcc" defined in st,stm32mp1-rcc.txt
 file.
+This parent node may optionally have additional children nodes which define
+specific init values for RCC elements.
+
 The added properties for clock tree initialization are:
Required properties:
@@ -78,13 +81,16 @@ Required properties:
    >;
Optional Properties:
-- st,pll : A specific PLL configuration, including frequency.
+- children for a PLL configuration with "st,stm32mp1-pll" compatible
-  PLL children nodes for PLL1 to PLL4 (see ref manual for details)
-  are listed with associated index 0 to 3 (st,pll@0 to st,pll@3).
-  PLLx is off when the associated node is absent.
+  each PLL children nodes for PLL1 to PLL4 (see ref manual for details)
+  are listed with associated reg 0 to 3.
+  PLLx is off when the associated node is absent or deactivated.
Here are the available properties for each PLL node:
+    - compatible: should be "st,stm32mp1-pll"
+
+    - reg: index of the pll instance
- cfg: The parameters for PLL configuration in the following order:
            DIVM DIVN DIVP DIVQ DIVR Output.
@@ -118,18 +124,26 @@ Optional Properties:
Example:
    st,pll@0 {
+		compatible = "st,stm32mp1-pll";
+		reg = <0>;
    	cfg = < 1 53 0 0 0 1 >;
    	frac = < 0x810 >;
    };
    st,pll@1 {
+		compatible = "st,stm32mp1-pll";
+		reg = <1>;
    	cfg = < 1 43 1 0 0 PQR(0,1,1) >;
    	csg = < 10 20 1 >;
    };
    st,pll@2 {
+		compatible = "st,stm32mp1-pll";
+		reg = <2>;
    	cfg = < 2 85 3 13 3 0 >;
    	csg = < 10 20 SSCG_MODE_CENTER_SPREAD >;
    	};
    st,pll@3 {
+		compatible = "st,stm32mp1-pll";
+		reg = <3>;
    	cfg = < 2 78 4 7 9 3 >;
    };
@@ -277,6 +291,8 @@ Example of clock tree initialization
    		u-boot,dm-pre-reloc;
    		compatible = "st,stm32mp1-rcc", "syscon";
    		reg = <0x50000000 0x1000>;
+			#address-cells = <1>;
+			#size-cells = <0>;
    		#clock-cells = <1>;
    		#reset-cells = <1>;
    		interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>;
@@ -347,6 +363,8 @@ Example of clock tree initialization
/* VCO = 1300.0 MHz => P = 650 (CPU) */
    		pll1: st,pll@0 {
+				compatible = "st,stm32mp1-pll";
+				reg = <0>;
    			cfg = < 2 80 0 0 0 PQR(1,0,0) >;
    			frac = < 0x800 >;
    			u-boot,dm-pre-reloc;
@@ -355,6 +373,8 @@ Example of clock tree initialization
    		/* VCO = 1066.0 MHz => P = 266 (AXI), Q = 533 (GPU),
    		                       R = 533 (DDR) */
    		pll2: st,pll@1 {
+				compatible = "st,stm32mp1-pll";
+				reg = <1>;
    			cfg = < 2 65 1 0 0 PQR(1,1,1) >;
    			frac = < 0x1400 >;
    			u-boot,dm-pre-reloc;
@@ -362,6 +382,8 @@ Example of clock tree initialization
/* VCO = 417.8 MHz => P = 209, Q = 24, R = 11 */
    		pll3: st,pll@2 {
+				compatible = "st,stm32mp1-pll";
+				reg = <2>;
    			cfg = < 1 33 1 16 36 PQR(1,1,1) >;
    			frac = < 0x1a04 >;
    			u-boot,dm-pre-reloc;
@@ -369,6 +391,8 @@ Example of clock tree initialization
/* VCO = 594.0 MHz => P = 99, Q = 74, R = 74 */
    		pll4: st,pll@3 {
+				compatible = "st,stm32mp1-pll";
+				reg = <3>;
    			cfg = < 3 98 5 7 7 PQR(1,1,1) >;
    			u-boot,dm-pre-reloc;
    		};
-- 
2.17.1


    