linux-kernel - [PATCH v2 3/6] arm64: dts: ti: k3-j7200-som: Describe OSPI and Hyperflash partition info

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Date:   Sat, 13 May 2023 19:47:09 +0530
From:   Vaishnav Achath <vaishnav.a@...com>
To:     <vigneshr@...com>, <nm@...com>, <kristo@...nel.org>,
        <conor+dt@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <afd@...com>
CC:     <vaishnav.a@...com>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <u-kumar1@...com>
Subject: [PATCH v2 3/6] arm64: dts: ti: k3-j7200-som: Describe OSPI and Hyperflash partition info

Describe OSPI and Hyperflash partition information through device tree,
this helps to remove passing partition information through the mtdparts
commandline parameter which requires maintaining the partition information
in a string format. J7200 SoM has a S28 64 MiB OSPI flash with sector size
of 256 KiB thus the size of the smallest partition is chosen as 256 KiB,
the SoM also has a 64 MiB Hyperflash present on it, the partition names
and offsets are chosen according to the corresponding name and offsets
in bootloader.

Signed-off-by: Vaishnav Achath <vaishnav.a@...com>
---
 arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi | 72 +++++++++++++++++++++
 1 file changed, 72 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi
index 269424154771..2a743b895074 100644
--- a/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi
@@ -149,6 +149,37 @@
 	flash@0,0 {
 		compatible = "cypress,hyperflash", "cfi-flash";
 		reg = <0x00 0x00 0x4000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "hbmc.tiboot3";
+				reg = <0x0 0x100000>;
+			};
+
+			partition@...000 {
+				label = "hbmc.tispl";
+				reg = <0x100000 0x200000>;
+			};
+
+			partition@...000 {
+				label = "hbmc.u-boot";
+				reg = <0x300000 0x400000>;
+			};
+
+			partition@...000 {
+				label = "hbmc.env";
+				reg = <0x700000 0x40000>;
+			};
+
+			partition@...000 {
+				label = "hbmc.rootfs";
+				reg = <0x800000 0x3800000>;
+			};
+		};
 	};
 };
 
@@ -250,5 +281,46 @@
 		cdns,tchsh-ns = <60>;
 		cdns,tslch-ns = <60>;
 		cdns,read-delay = <4>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "ospi.tiboot3";
+				reg = <0x0 0x100000>;
+			};
+
+			partition@...000 {
+				label = "ospi.tispl";
+				reg = <0x100000 0x200000>;
+			};
+
+			partition@...000 {
+				label = "ospi.u-boot";
+				reg = <0x300000 0x400000>;
+			};
+
+			partition@...000 {
+				label = "ospi.env";
+				reg = <0x700000 0x40000>;
+			};
+
+			partition@...000 {
+				label = "ospi.env.backup";
+				reg = <0x740000 0x40000>;
+			};
+
+			partition@...000 {
+				label = "ospi.rootfs";
+				reg = <0x800000 0x37c0000>;
+			};
+
+			partition@...0000 {
+				label = "ospi.phypattern";
+				reg = <0x3fc0000 0x40000>;
+			};
+		};
 	};
 };
-- 
2.17.1