linux-kernel - [PATCH 1/3] arm64: dts: ti: iot2050: Add layout of OSPI flash

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Message-Id: <d135b246bd302060175276d3653f2891077eb109.1674059300.git.jan.kiszka@siemens.com>
Date:   Wed, 18 Jan 2023 17:28:18 +0100
From:   Jan Kiszka <jan.kiszka@...mens.com>
To:     Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>,
        Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Bao Cheng Su <baocheng.su@...mens.com>,
        Chao Zeng <chao.zeng@...mens.com>
Subject: [PATCH 1/3] arm64: dts: ti: iot2050: Add layout of OSPI flash

From: Jan Kiszka <jan.kiszka@...mens.com>

Describe the layout of the OSPI flash as the latest firmware uses it.
Specifically the location of the U-Boot envs is important for userspace
in order to access it.

Signed-off-by: Jan Kiszka <jan.kiszka@...mens.com>
---
 .../boot/dts/ti/k3-am65-iot2050-common.dtsi   | 46 +++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi b/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi
index 3cced26b520a..96ac2b476b11 100644
--- a/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi
@@ -609,6 +609,52 @@ flash@0 {
 		cdns,tchsh-ns = <60>;
 		cdns,tslch-ns = <60>;
 		cdns,read-delay = <2>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			seboot@0 {
+				label = "seboot";
+				reg = <0x0 0x180000>; /* 1.5M */
+			};
+
+			tispl@...000 {
+				label = "tispl";
+				reg = <0x180000 0x200000>; /* 2M */
+			};
+
+			u-boot@...000 {
+				label = "u-boot";
+				reg = <0x380000 0x300000>; /* 3M */
+			};
+
+			env@...000 {
+				label = "env";
+				reg = <0x680000 0x20000>; /* 128K */
+			};
+
+			env-backup@...000 {
+				label = "env.backup";
+				reg = <0x6a0000 0x20000>; /* 128K */
+			};
+
+			otpcmd@...000 {
+				label = "otpcmd";
+				reg = <0x6c0000 0x10000>; /* 64K */
+			};
+
+			unused@...000 {
+				label = "unused";
+				reg = <0x6d0000 0x7b0000>; /* 7872K */
+			};
+
+			seboot-backup@...000 {
+				label = "seboot.backup";
+				reg = <0xe80000 0x180000>; /* 1.5M */
+			};
+		};
 	};
 };
 
-- 
2.35.3