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

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@phytec.com>
Link: https://lore.kernel.org/r/20240621233143.2077941-1-nmorrisson@phytec.com
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 1e6fcd1ff7ba27dae9e09c4f79c069c4f98d7555..cebc7bade968d74935972404379fba09d8b2bc6e 100644 (file)
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -63,6 +63,7 @@ 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 \
@@ -131,6 +132,8 @@ 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 \
@@ -162,6 +165,8 @@ 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-phyboard-electra-pcie-usb2-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 (file)
index 0000000..969dfeb
--- /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@phytec.com>
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include "k3-pinctrl.h"
+
+&serial_flash {
+       spi-tx-bus-width = <1>;
+       spi-rx-bus-width = <4>;
+};