arm64: zynqmp: Add description for SOM/Kria boards
The patch contains several DT files for SOM platform.
Carrier card is sck-kv (KV260) revA/B. SMK-K26 is description for starter
kit which doesn't have EMMC populated. And SM-K26 is full som with EMMC.
Files are divided in this way to make sure that SOM can be plugged to
different carrier card and all peripherals on SOM (or defined by a spec) can
be used by U-Boot. Full DT for SOM+CC can be merged together as overlays.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/arm/dts/zynqmp-sm-k26-revA-u-boot.dtsi b/arch/arm/dts/zynqmp-sm-k26-revA-u-boot.dtsi
new file mode 100644
index 0000000..3f01233
--- /dev/null
+++ b/arch/arm/dts/zynqmp-sm-k26-revA-u-boot.dtsi
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * dts file for Xilinx ZynqMP K26/KV260 SD wiring
+ *
+ * (C) Copyright 2020, Xilinx, Inc.
+ *
+ * Michal Simek <michal.simek@xilinx.com>
+ */
+
+/* SD0 only supports 3.3V, no level shifter */
+&sdhci1 { /* on CC - MIO 39 - 51 */
+ status = "okay";
+ no-1-8-v;
+ disable-wp;
+ broken-cd;
+ xlnx,mio-bank = <1>;
+ /* Do not run SD in HS mode from bootloader */
+ sdhci-caps-mask = <0 0x200000>;
+ sdhci-caps = <0 0>;
+ max-frequency = <19000000>;
+};