diff mbox series

[PATCH/RFC,12/13] ARM: dts: renesas: marzen: Add FLASH node

Message ID 440ce3bb950c34fd57071b4eec83ad9643b682e5.1693481518.git.geert+renesas@glider.be (mailing list archive)
State Mainlined
Commit 6ebf1725e1f0bf712f547de7d9d14066279bb546
Delegated to: Geert Uytterhoeven
Headers show
Series ARM: dts: renesas: LBSC and FLASH improvements | expand

Commit Message

Geert Uytterhoeven Aug. 31, 2023, 11:52 a.m. UTC 
Add a device node for the Spansion S29GL512N NOR FLASH on the Marzen
development board.  This FLASH resides in the external address space of
the Local Bus State Controller.

Note that as the CFI-FLASH has a run-time conflict with CPU bring-up, it
will only be available when booting with SMP disabled.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
Changes compared to RFC:
  - Use "cfi-flash" compatible value,
  - Add pin control,
  - Move to LBSC,
  - Depends on "[PATCH] ARM: shmobile: r8a7779: Reserve boot area when
    SMP is enabled".

[1] "[PATCH/RFC] ARM: dts: marzen: Add FLASH node"
    https://lore.kernel.org/r/07cf5e2b466f3ba217403afc66a8246460609e09.1679330105.git.geert+renesas@glider.be/
---
 arch/arm/boot/dts/renesas/r8a7779-marzen.dts | 34 ++++++++++++++++++++
 1 file changed, 34 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm/boot/dts/renesas/r8a7779-marzen.dts b/arch/arm/boot/dts/renesas/r8a7779-marzen.dts
index 9c001cbfc02f79f7..dfc6d63a21cd5474 100644
--- a/arch/arm/boot/dts/renesas/r8a7779-marzen.dts
+++ b/arch/arm/boot/dts/renesas/r8a7779-marzen.dts
@@ -229,6 +229,35 @@  &extal_clk {
 };
 
 &lbsc {
+	flash@0 {
+		compatible = "cfi-flash";
+		reg = <0x0 0x04000000>;
+		pinctrl-0 = <&flash_pins>;
+		pinctrl-names = "default";
+		bank-width = <2>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "uboot";
+				reg = <0x00000000 0x00040000>;
+				read-only;
+			};
+			partition@40000 {
+				label = "uboot-env";
+				reg = <0x00040000 0x00040000>;
+				read-only;
+			};
+			partition@80000 {
+				label = "flash";
+				reg = <0x00080000 0x03f80000>;
+			};
+		};
+	};
+
 	ethernet@18000000 {
 		compatible = "smsc,lan89218", "smsc,lan9115";
 		reg = <0x18000000 0x100>;
@@ -288,6 +317,11 @@  lbsc {
 		};
 	};
 
+	flash_pins: flash {
+		groups = "lbsc_cs0";
+		function = "lbsc";
+	};
+
 	scif2_pins: scif2 {
 		groups = "scif2_data_c";
 		function = "scif2";