mips: octeon: Add minimal Octeon 3 EBB7304 EVK support
This patch adds very basic minimal support for the Marvell Octeon 3
CN73xx based EBB7304 EVK. Please note that the basic Octeon port does
not support DDR3/4 initialization yet. To still use U-Boot on with this
port, the L2 cache (4MiB) is used as RAM. This way, U-Boot can boot
to the prompt on this board.
Supported devices:
- UART
- reset
- CFI parallel NOR flash
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/arch/mips/dts/Makefile b/arch/mips/dts/Makefile
index f711e9f..dc85901 100644
--- a/arch/mips/dts/Makefile
+++ b/arch/mips/dts/Makefile
@@ -18,6 +18,7 @@
dtb-$(CONFIG_BOARD_COMTREND_WAP5813N) += comtrend,wap-5813n.dtb
dtb-$(CONFIG_BOARD_HUAWEI_HG556A) += huawei,hg556a.dtb
dtb-$(CONFIG_BOARD_MT7628_RFB) += mediatek,mt7628-rfb.dtb
+dtb-$(CONFIG_TARGET_OCTEON_EBB7304) += mrvl,octeon-ebb7304.dtb
dtb-$(CONFIG_BOARD_NETGEAR_CG3100D) += netgear,cg3100d.dtb
dtb-$(CONFIG_BOARD_NETGEAR_DGND3700V2) += netgear,dgnd3700v2.dtb
dtb-$(CONFIG_BOARD_SAGEM_FAST1704) += sagem,f@st1704.dtb
diff --git a/arch/mips/dts/mrvl,octeon-ebb7304.dts b/arch/mips/dts/mrvl,octeon-ebb7304.dts
new file mode 100644
index 0000000..4e9c2de
--- /dev/null
+++ b/arch/mips/dts/mrvl,octeon-ebb7304.dts
@@ -0,0 +1,96 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Marvell / Cavium Inc. EVB CN7300
+ */
+
+/dts-v1/;
+
+/include/ "mrvl,cn73xx.dtsi"
+
+/ {
+ model = "cavium,ebb7304";
+ compatible = "cavium,ebb7304";
+
+ aliases {
+ serial0 = &uart0;
+ };
+
+ chosen {
+ stdout-path = &uart0;
+ };
+};
+
+&bootbus {
+ /*
+ * bootbus CS0 for CFI flash is remapped (0x1fc0.0000 -> 1f40.0000)
+ * as the initial size is too small for the 8MiB flash device
+ */
+ ranges = <0 0 0 0x1f400000 0xc00000>,
+ <1 0 0x10000 0x10000000 0>,
+ <2 0 0x10000 0x20000000 0>,
+ <3 0 0x10000 0x30000000 0>,
+ <4 0 0 0x1d020000 0x10000>,
+ <5 0 0x10000 0x50000000 0>,
+ <6 0 0x10000 0x60000000 0>,
+ <7 0 0x10000 0x70000000 0>;
+
+ cavium,cs-config@0 {
+ compatible = "cavium,octeon-3860-bootbus-config";
+ cavium,cs-index = <0>;
+ cavium,t-adr = <10>;
+ cavium,t-ce = <50>;
+ cavium,t-oe = <50>;
+ cavium,t-we = <35>;
+ cavium,t-rd-hld = <25>;
+ cavium,t-wr-hld = <35>;
+ cavium,t-pause = <0>;
+ cavium,t-wait = <50>;
+ cavium,t-page = <30>;
+ cavium,t-rd-dly = <0>;
+ cavium,page-mode = <1>;
+ cavium,pages = <8>;
+ cavium,bus-width = <8>;
+ };
+
+ cavium,cs-config@4 {
+ compatible = "cavium,octeon-3860-bootbus-config";
+ cavium,cs-index = <4>;
+ cavium,t-adr = <10>;
+ cavium,t-ce = <10>;
+ cavium,t-oe = <160>;
+ cavium,t-we = <100>;
+ cavium,t-rd-hld = <10>;
+ cavium,t-wr-hld = <0>;
+ cavium,t-pause = <50>;
+ cavium,t-wait = <50>;
+ cavium,t-page = <10>;
+ cavium,t-rd-dly = <10>;
+ cavium,pages = <0>;
+ cavium,bus-width = <8>;
+ };
+
+ flash0: nor@0,0 {
+ compatible = "cfi-flash";
+ reg = <0 0 0x800000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ partition@0 {
+ label = "bootloader";
+ reg = <0 0x340000>;
+ read-only;
+ };
+ partition@300000 {
+ label = "storage";
+ reg = <0x340000 0x4be000>;
+ };
+ partition@7fe000 {
+ label = "environment";
+ reg = <0x7fe000 0x2000>;
+ read-only;
+ };
+ };
+};
+
+&uart0 {
+ clock-frequency = <1200000000>;
+};