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From:   Vaishnav Achath <vaishnav.a@ti.com>
To:     <vigneshr@ti.com>, <nm@ti.com>, <kristo@kernel.org>,
        <conor+dt@kernel.org>, <robh+dt@kernel.org>,
        <krzysztof.kozlowski+dt@linaro.org>, <afd@ti.com>
CC:     <vaishnav.a@ti.com>, <devicetree@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>, <u-kumar1@ti.com>
Subject: [PATCH v2 3/6] arm64: dts: ti: k3-j7200-som: Describe OSPI and Hyperflash partition info
Date:   Sat, 13 May 2023 19:47:09 +0530
Message-ID: <20230513141712.27346-4-vaishnav.a@ti.com>
In-Reply-To: <20230513141712.27346-1-vaishnav.a@ti.com>
References: <20230513141712.27346-1-vaishnav.a@ti.com>
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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@ti.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@100000 {
+				label = "hbmc.tispl";
+				reg = <0x100000 0x200000>;
+			};
+
+			partition@300000 {
+				label = "hbmc.u-boot";
+				reg = <0x300000 0x400000>;
+			};
+
+			partition@700000 {
+				label = "hbmc.env";
+				reg = <0x700000 0x40000>;
+			};
+
+			partition@800000 {
+				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@100000 {
+				label = "ospi.tispl";
+				reg = <0x100000 0x200000>;
+			};
+
+			partition@300000 {
+				label = "ospi.u-boot";
+				reg = <0x300000 0x400000>;
+			};
+
+			partition@700000 {
+				label = "ospi.env";
+				reg = <0x700000 0x40000>;
+			};
+
+			partition@740000 {
+				label = "ospi.env.backup";
+				reg = <0x740000 0x40000>;
+			};
+
+			partition@800000 {
+				label = "ospi.rootfs";
+				reg = <0x800000 0x37c0000>;
+			};
+
+			partition@3fc0000 {
+				label = "ospi.phypattern";
+				reg = <0x3fc0000 0x40000>;
+			};
+		};
 	};
 };
-- 
2.17.1