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ARM: dts: am335x-myirtech: Add an external clock oscillator for CPU RTC

PATCH Applied Alexander Shiyan 2 participants 3 messages Apr 27, 2022 – May 3, 2022 Device tree bindings

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Alexander Shiyan

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#0 lore raw

PATCH 1/2 ARM: dts: am335x-myirtech: Add an external clock oscillator for CPU RTC

The CPU RTC has an external crystal, so to keep time, let's define it for devicetree.

Signed-off-by Alexander Shiyan <[email protected]>
---
 arch/arm/boot/dts/am335x-myirtech-myc.dtsi | 9 +++++++++
 1 file changed, 9 insertions(+)
arch/arm/boot/dts/am335x-myirtech-myc.dtsi +9 -0
index 245c35f41cdf..d94e096983c7 100644
@@ -27,6 +27,13 @@ memory@80000000 {
 		reg = <0x80000000 0x10000000>;
 	};
 
+	clk32k: clk32k {
+		compatible = "fixed-clock";
+		clock-frequency = <32768>;
+
+		#clock-cells = <0>;
+	};
+
 	vdd_mod: vdd_mod_reg {
 		compatible = "regulator-fixed";
 		regulator-name = "vdd-mod";

@@ -149,6 +156,8 @@ eeprom: eeprom@50 {
 };
 
 &rtc {
+	clocks = <&clk32k>;
+	clock-names = "ext-clk";
 	system-power-controller;
 };
Signature · 1 line
2.32.0
author
#1 lore raw

PATCH 2/2 ARM: dts: am335x-myirtech: Update NAND default partition table layout

This patch replaces the legacy partition table layout with a modern style. As an additional change, we are reserving space for three backup MLO entries and increasing space for the main bootloader.

Signed-off-by Alexander Shiyan <[email protected]>
---
 arch/arm/boot/dts/am335x-myirtech-myc.dtsi |  3 ---
 arch/arm/boot/dts/am335x-myirtech-myd.dts  | 20 +++++++++++++-------
 2 files changed, 13 insertions(+), 10 deletions(-)
arch/arm/boot/dts/am335x-myirtech-myc.dtsi +0 -3
index d94e096983c7..6eea18b29355 100644
@@ -131,9 +131,6 @@ nand0: nand@0,0 {
 		gpmc,wr-data-mux-bus-ns = <0>;
 		ti,elm-id = <&elm>;
 		ti,nand-ecc-opt = "bch8";
-
-		#address-cells = <1>;
-		#size-cells = <1>;
 	};
 };
arch/arm/boot/dts/am335x-myirtech-myd.dts +13 -7
index 1479fd95dec2..9d81d4cc6890 100644
@@ -227,14 +227,20 @@ &mmc1 {
 };
 
 &nand0 {
-	partition@0 {
-		label = "MLO";
-		reg = <0x00000 0x20000>;
-	};
+	nand_parts: partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
 
-	partition@20000 {
-		label = "boot";
-		reg = <0x20000 0x80000>;
+		partition@0 {
+			label = "MLO";
+			reg = <0x00000 0x20000>;
+		};
+
+		partition@80000 {
+			label = "boot";
+			reg = <0x80000 0x100000>;
+		};
 	};
 };
Signature · 1 line
2.32.0
Applied
#2 lore raw
In reply to Alexander Shiyan
Quoted 2 lines · Alexander Shiyan

The CPU RTC has an external crystal, so to keep time, let's define it for devicetree.

I've applied both patches into omap-for-v5.19/dt thanks.

Tony