arm: add support for SoC s5p4418 (cpu) / nanopi2 board

Changes in relation to FriendlyARM's U-Boot nanopi2-v2016.01:
- SPL not supported yet --> no spl-dir in arch/arm/cpu/armv7/s5p4418/.
  Appropriate line in Makefile removed.
- cpu.c: '#include <cpu_func.h>' added.
- arch/arm/cpu/armv7/s5p4418/u-boot.lds removed, is not required
  anylonger.
- "obj-$(CONFIG_ARCH_NEXELL) += s5p-common/" added to
  arch/arm/cpu/armv7/Makefile since s5p-common/pwm.c is used instead
  of drivers/pwm/pwm-nexell.c.
- s5p4418.dtsi: '#include "../../../include/generated/autoconf.h"'
  removed, is not necessary, error at out-of-tree building.
  '#ifdef CONFIG_CPU_NXP4330'-blocks (2x) removed. Some minor changes
  regarding mmc. 'u-boot,dm-pre-reloc' added to dp0 because of added
  DM_VIDEO support.
- board/s5p4418/ renamed to board/friendlyarm/
- All s5p4418-boards except nanopi2 removed because there is no
  possibility to test the other boards.
- Kconfig: Changes to have a structure like mach-bcm283x (RaspberryPi),
  e.g. "config ..." entries moved from/to other Kconfig.
- "CONFIG_" removed from several s5p4418/nanopi2 specific defines
  because the appropriate values do not need to be configurable.
- nanopi2/board.c: All getenv(), getenv_ulong(), setenv() and saveenv()
  renamed to env_get(), env_get_ulong(), env_set() and env_save(),
  respectively. MACH_TYPE_S5P4418 is not defined anymore, therefore
  appropriate code removed (not necessary for DT-kernels).
- nanopi2/onewire.c: All crc8() renamed to crc8_ow() because crc8() is
  already defined in lib/crc8.c (with different parameters).
- dts: "nexell,s5pxx18-i2c" used instead of "i2c-gpio", i2c0 and
  i2c1 added. gmac-, ehci- and dwc2otg-entries removed because the
  appropriate functionality is not supported yet. New mmc-property
  "mmcboost" added.
  s5p4418-pinctrl.dtsi: gmac-entries removed, mmc- and i2c-entries
  added.
- '#ifdef CONFIG...' changed to 'if (IS_ENABLED(CONFIG...))' where
  possible (and similar).

Signed-off-by: Stefan Bosch <stefan_b@posteo.net>

1 files changed, 170 insertions, 0 deletions

diff --git a/arch/arm/dts/s5p4418.dtsi b/arch/arm/dts/s5p4418.dtsi
new file mode 100644
index 0000000000..a4d1a1bd03
--- /dev/null
+++ b/arch/arm/dts/s5p4418.dtsi
@@ -0,0 +1,170 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2020 Stefan Bosch <stefan_b@posteo.net>
+ *
+ * (C) Copyright 2016 Nexell
+ * Youngbok, Park <park@nexell.co.kr>
+ *
+ */
+
+#include "skeleton.dtsi"
+
+/ {
+	#include "s5p4418-pinctrl.dtsi"
+
+	aliases {
+		mmc0 = &mmc0;
+		mmc1 = &mmc1;
+		mmc2 = &mmc2;
+		gmac = "/ethernet@c0060000";
+	};
+
+	mmc2:mmc@c0069000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "nexell,nexell-dwmmc";
+		reg = <0xc0069000 0x1000>;
+		bus-width = <4>;
+		index = <2>;
+		max-frequency = <50000000>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&mmc2_clk>, <&mmc2_cmd>, <&mmc2_bus4>;
+		status = "disabled";
+	};
+
+	mmc1:mmc@c0068000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "nexell,nexell-dwmmc";
+		reg = <0xc0068000 0x1000>;
+		bus-width = <4>;
+		index = <1>;
+		max-frequency = <50000000>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&mmc1_clk>, <&mmc1_cmd>, <&mmc1_bus4>;
+		status = "disabled";
+	};
+
+	mmc0:mmc@c0062000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "nexell,nexell-dwmmc";
+		reg = <0xc0062000 0x1000>;
+		bus-width = <4>;
+		index = <0>;
+		max-frequency = <50000000>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&mmc0_clk>, <&mmc0_cmd>, <&mmc0_bus4>;
+		status = "disabled";
+	};
+
+	i2c0:i2c@c00a4000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "nexell,s5pxx18-i2c";
+		reg = <0xc00a4000 0x100>;
+		clock-frequency = <100000>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&i2c0_sda>, <&i2c0_scl>;
+		status ="disabled";
+	};
+
+	i2c1:i2c@c00a5000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "nexell,s5pxx18-i2c";
+		reg = <0xc00a5000 0x100>;
+		clock-frequency = <100000>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&i2c1_sda>, <&i2c1_scl>;
+		status ="disabled";
+	};
+
+	i2c2:i2c@c00a6000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "nexell,s5pxx18-i2c";
+		reg = <0xc00a6000 0x100>;
+		clock-frequency = <100000>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&i2c2_sda>, <&i2c2_scl>;
+		status ="disabled";
+	};
+
+	dp0:dp@c0102800 {
+		compatible = "nexell,nexell-display";
+		reg = <0xc0102800 0x100>;
+		index = <0>;
+		u-boot,dm-pre-reloc;
+		status = "disabled";
+	};
+
+	dp1:dp@c0102c00 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "nexell,nexell-display";
+		reg = <0xc0102c00 0x100>;
+		index = <1>;
+		status = "disabled";
+	};
+
+	gpio_a:gpio@c001a000 {
+		compatible = "nexell,nexell-gpio";
+		reg = <0xc001a000 0x00000010>;
+		altr,gpio-bank-width = <32>;
+		gpio-bank-name = "gpio_a";
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+
+	gpio_b:gpio@c001b000 {
+		compatible = "nexell,nexell-gpio";
+		reg = <0xc001b000 0x00000010>;
+		altr,gpio-bank-width = <32>;
+		gpio-bank-name = "gpio_b";
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+
+	gpio_c:gpio@c001c000 {
+		compatible = "nexell,nexell-gpio";
+		reg = <0xc001c000 0x00000010>;
+		nexell,gpio-bank-width = <32>;
+		gpio-bank-name = "gpio_c";
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+
+	gpio_d:gpio@c001d000 {
+		compatible = "nexell,nexell-gpio";
+		reg = <0xc001d000 0x00000010>;
+		nexell,gpio-bank-width = <32>;
+		gpio-bank-name = "gpio_d";
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+
+	gpio_e:gpio@c001e000 {
+		compatible = "nexell,nexell-gpio";
+		reg = <0xc001e000 0x00000010>;
+		nexell,gpio-bank-width = <32>;
+		gpio-bank-name = "gpio_e";
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+
+	gpio_alv:gpio@c0010800 {
+		compatible = "nexell,nexell-gpio";
+		reg = <0xc0010800 0x00000010>;
+		nexell,gpio-bank-width = <32>;
+		gpio-bank-name = "gpio_alv";
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+
+	pinctrl@C0010000 {
+		compatible = "nexell,s5pxx18-pinctrl";
+		reg = <0xc0010000 0xf000>;
+		u-boot,dm-pre-reloc;
+	};
+};