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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/arc/boot/dts/axc001.dtsi
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arc/boot/dts/axc001.dtsi')
-rw-r--r--arch/arc/boot/dts/axc001.dtsi126
1 files changed, 126 insertions, 0 deletions
diff --git a/arch/arc/boot/dts/axc001.dtsi b/arch/arc/boot/dts/axc001.dtsi
new file mode 100644
index 000000000..2a151607b
--- /dev/null
+++ b/arch/arc/boot/dts/axc001.dtsi
@@ -0,0 +1,126 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2013-15 Synopsys, Inc. (www.synopsys.com)
+ */
+
+/*
+ * Device tree for AXC001 770D/EM6/AS221 CPU card
+ * Note that this file only supports the 770D CPU
+ */
+
+/include/ "skeleton.dtsi"
+
+/ {
+ compatible = "snps,arc";
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ cpu_card {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ ranges = <0x00000000 0x0 0xf0000000 0x10000000>;
+
+ core_clk: core_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <750000000>;
+ };
+
+ input_clk: input-clk {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <33333333>;
+ };
+
+ core_intc: arc700-intc@cpu {
+ compatible = "snps,arc700-intc";
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ };
+
+ /*
+ * this GPIO block ORs all interrupts on CPU card (creg,..)
+ * to uplink only 1 IRQ to ARC core intc
+ */
+ dw-apb-gpio@2000 {
+ compatible = "snps,dw-apb-gpio";
+ reg = < 0x2000 0x80 >;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ictl_intc: gpio-controller@0 {
+ compatible = "snps,dw-apb-gpio-port";
+ gpio-controller;
+ #gpio-cells = <2>;
+ snps,nr-gpios = <30>;
+ reg = <0>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ interrupt-parent = <&core_intc>;
+ interrupts = <15>;
+ };
+ };
+
+ debug_uart: dw-apb-uart@5000 {
+ compatible = "snps,dw-apb-uart";
+ reg = <0x5000 0x100>;
+ clock-frequency = <33333000>;
+ interrupt-parent = <&ictl_intc>;
+ interrupts = <19 4>;
+ baud = <115200>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ };
+
+ arcpct0: pct {
+ compatible = "snps,arc700-pct";
+ };
+ };
+
+ /*
+ * This INTC is actually connected to DW APB GPIO
+ * which acts as a wire between MB INTC and CPU INTC.
+ * GPIO INTC is configured in platform init code
+ * and here we mimic direct connection from MB INTC to
+ * CPU INTC, thus we set "interrupts = <7>" instead of
+ * "interrupts = <12>"
+ *
+ * This intc actually resides on MB, but we move it here to
+ * avoid duplicating the MB dtsi file given that IRQ from
+ * this intc to cpu intc are different for axs101 and axs103
+ */
+ mb_intc: interrupt-controller@e0012000 {
+ #interrupt-cells = <1>;
+ compatible = "snps,dw-apb-ictl";
+ reg = < 0x0 0xe0012000 0x0 0x200 >;
+ interrupt-controller;
+ interrupt-parent = <&core_intc>;
+ interrupts = < 7 >;
+ };
+
+ memory {
+ device_type = "memory";
+ /* CONFIG_LINUX_RAM_BASE needs to match low mem start */
+ reg = <0x0 0x80000000 0x0 0x1b000000>; /* (512 - 32) MiB */
+ };
+
+ reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+ /*
+ * We just move frame buffer area to the very end of
+ * available DDR. And even though in case of ARC770 there's
+ * no strict requirement for a frame-buffer to be in any
+ * particular location it allows us to use the same
+ * base board's DT node for ARC PGU as for ARc HS38.
+ */
+ frame_buffer: frame_buffer@9e000000 {
+ compatible = "shared-dma-pool";
+ reg = <0x0 0x9e000000 0x0 0x2000000>;
+ no-map;
+ };
+ };
+};