From 6f398aa76248dfdbd1ea31b8ef32431be0f762ee Mon Sep 17 00:00:00 2001
From: Daniel Golle <daniel@makrotopia.org>
Date: Thu, 31 May 2018 17:28:38 +0200
Subject: oxnas: reboot target

Reboot the oxnas target based on Linux 4.14 by rebasing our support on
top of the now-existing upstream kernel support.
This commit brings oxnas support to the level of v4.17 having upstream
drivers for Ethernet, Serial and NAND flash.
Botch up OpenWrt's local drivers for EHCI, SATA and PCIe based on the
new platform code and device-tree.
Re-introduce base-files from old oxnas target which works for now but
needs further clean-up towards generic board support.

Functional issues:
 * PCIe won't come up (hence no USB3 on Shuttle KD20)
 * I2C bus of Akitio myCloud device is likely not to work (missing
   debounce support in new pinctrl driver)

Code-style issues:
 * plla/pllb needs further cleanup -- currently their users are writing
   into the syscon regmap after acquireling the clk instead of using
   defined clk_*_*() functions to setup multipliers and dividors.
 * PCIe phy needs its own little driver.
 * SATA driver is a monster and should be split into an mfd having
   a raidctrl regmap, sata controller, sata ports and sata phy.

Tested on MitraStar STG-212 aka. Medion Akoya MD86xxx and Shuttle KD20.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(squash-picked commit 17511a7ea8 and commit dcc34574ef from master)
---
 .../arch/arm/boot/dts/ox820-mitrastar-stg212.dts   | 116 +++++++++++++++++++++
 1 file changed, 116 insertions(+)
 create mode 100644 target/linux/oxnas/files/arch/arm/boot/dts/ox820-mitrastar-stg212.dts

(limited to 'target/linux/oxnas/files/arch/arm/boot/dts/ox820-mitrastar-stg212.dts')

diff --git a/target/linux/oxnas/files/arch/arm/boot/dts/ox820-mitrastar-stg212.dts b/target/linux/oxnas/files/arch/arm/boot/dts/ox820-mitrastar-stg212.dts
new file mode 100644
index 0000000000..834ea77653
--- /dev/null
+++ b/target/linux/oxnas/files/arch/arm/boot/dts/ox820-mitrastar-stg212.dts
@@ -0,0 +1,116 @@
+/dts-v1/;
+
+#include "ox820.dtsi"
+
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "MitraStar Technology Corp. STG-212";
+
+	compatible = "mitrastar,stg-212", "oxsemi,ox820";
+
+	chosen {
+		bootargs = "earlyprintk";
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory {
+		/* 128Mbytes DDR */
+		reg = <0x60000000 0x8000000>;
+	};
+
+	aliases {
+		serial0 = &uart0;
+		gpio0 = &gpio0;
+		gpio1 = &gpio1;
+	};
+
+	gpio-keys-polled {
+		compatible = "gpio-keys-polled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		poll-interval = <100>;
+
+		reset {
+			label = "reset";
+			gpios = <&gpio1 11 1>;
+			linux,code = <KEY_RESTART>;
+		};
+		copy {
+			label = "copy";
+			gpios = <&gpio1 13 1>;
+			linux,code = <KEY_COPY>;
+		};
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+		status {
+			label = "zyxel:blue:status";
+			gpios = <&gpio1 5 0>;
+		};
+		status2 {
+			label = "zyxel:red:status";
+			gpios = <&gpio1 6 1>;
+		};
+		copy {
+			label = "zyxel:orange:copy";
+			gpios = <&gpio1 8 1>;
+		};
+	};
+
+	i2c-gpio {
+		compatible = "i2c-gpio";
+		gpios = <&gpio1 9 0 &gpio1 10 0>;
+		i2c-gpio,delay-us = <10>;
+	};
+
+};
+
+&uart0 {
+	status = "okay";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart0>;
+};
+
+&nandc {
+	status = "okay";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_nand>;
+
+	nand@0 {
+		reg = <0>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		nand-ecc-mode = "soft";
+		nand-ecc-algo = "hamming";
+
+		partition@0 {
+			label = "boot";
+			reg = <0x00000000 0x00e00000>;
+			read-only;
+		};
+
+		partition@e00000 {
+			label = "ubi";
+			reg = <0x00e00000 0x07200000>;
+		};
+	};
+};
+
+&etha {
+	status = "okay";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_etha_mdio>;
+};
+
+&ehci {
+	status = "okay";
+};
+
+&sata {
+	status = "okay";
+};
-- 
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