[PATCH] arm64: dts: ti: k3-am6xx-phycore-qspi-nor: Add overlay to enable QSPI NOR

[Nathan Morrisson]

Add an overlay to change from the default OSPI NOR to QSPI NOR
for all am6xx-phycore-som boards.
The EEPROM on am6xx-phycore-soms contains information about the
configuration of the SOM. The standard configuration of the SOM
has an ospi nor, but if qspi nor is populated, the EEPROM will
indicate that change and we can use this overlay to cleanly change to
qspi nor.

Signed-off-by: Nathan Morrisson <nmorrisson at phytec.com>
---
 arch/arm64/boot/dts/ti/Makefile                   |  5 +++++
 .../boot/dts/ti/k3-am6xx-phycore-qspi-nor.dtso    | 15 +++++++++++++++
 2 files changed, 20 insertions(+)
 create mode 100644 arch/arm64/boot/dts/ti/k3-am6xx-phycore-qspi-nor.dtso

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 8d8fc8bfaf7e..f0ddda064f08 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -58,6 +58,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am64-tqma64xxl-mbax4xxl-wlan.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am6xx-phycore-disable-eth-phy.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am6xx-phycore-disable-rtc.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am6xx-phycore-disable-spi-nor.dtbo
+dtb-$(CONFIG_ARCH_K3) += k3-am6xx-phycore-qspi-nor.dtbo
 
 # Boards with AM65x SoC
 k3-am654-gp-evm-dtbs := k3-am654-base-board.dtb \
@@ -120,6 +121,8 @@ k3-am625-phyboard-lyra-disable-spi-nor-dtbs := k3-am625-phyboard-lyra-rdk.dtb \
 	k3-am6xx-phycore-disable-spi-nor.dtbo
 k3-am625-phyboard-lyra-gpio-fan-dtbs := k3-am625-phyboard-lyra-rdk.dtb \
 	k3-am62x-phyboard-lyra-gpio-fan.dtbo
+k3-am625-phyboard-lyra-qspi-nor-dtbs := k3-am625-phyboard-lyra-rdk.dtb \
+	k3-am6xx-phycore-qspi-nor.dtbo
 k3-am625-sk-csi2-imx219-dtbs := k3-am625-sk.dtb \
 	k3-am62x-sk-csi2-imx219.dtbo
 k3-am625-sk-csi2-ov5640-dtbs := k3-am625-sk.dtb \
@@ -149,6 +152,8 @@ k3-am642-phyboard-electra-disable-rtc-dtbs := \
 	k3-am642-phyboard-electra-rdk.dtb k3-am6xx-phycore-disable-rtc.dtbo
 k3-am642-phyboard-electra-disable-spi-nor-dtbs := \
 	k3-am642-phyboard-electra-rdk.dtb k3-am6xx-phycore-disable-spi-nor.dtbo
+k3-am642-phyboard-electra-qspi-nor-dtbs := \
+	k3-am642-phyboard-electra-rdk.dtb k3-am6xx-phycore-qspi-nor.dtbo
 k3-am642-phyboard-electra-gpio-fan-dtbs := \
 	k3-am642-phyboard-electra-rdk.dtb k3-am642-phyboard-electra-gpio-fan.dtbo
 k3-am642-tqma64xxl-mbax4xxl-sdcard-dtbs := \
diff --git a/arch/arm64/boot/dts/ti/k3-am6xx-phycore-qspi-nor.dtso b/arch/arm64/boot/dts/ti/k3-am6xx-phycore-qspi-nor.dtso
new file mode 100644
index 000000000000..969dfebcd637
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am6xx-phycore-qspi-nor.dtso
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Copyright (C) 2024 PHYTEC America LLC
+ * Author: Nathan Morrisson <nmorrisson at phytec.com>
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include "k3-pinctrl.h"
+
+&serial_flash {
+	spi-tx-bus-width = <1>;
+	spi-rx-bus-width = <4>;
+};
-- 
2.25.1