[U-Boot] [RESEND PATCH v3] sun50i: a64: Add Olimex A64-Teres-I board initial support

Jonas Smedegaard dr at jones.dk
Thu Apr 18 19:44:17 UTC 2019 

[resent only to list, to avoid blocking due to too many recipients]

Olimex A64-Teres-I board is a mainboard (the only one so far)
for Olimex Teres-I DIY laptop kit.

Key features:
- Allwinner A64 Cortex-A53
- Mali-400MP2 GPU
- AXP803 PMIC
- 2GB DDR3 RAM
- MicroSD Slot
- 16GB eMMC Flash
- eDP LCD display
- HDMI
- USB Host
- Battery management
- 5V DC power supply
- Certified Open Source Hardware (OSHW)

Works:
- i2C
- MMC/SD
- PWM backlight

Known broken:
- USB

Company page: https://linux-sunxi.org/Olimex_Teres-A64
Community page: https://linux-sunxi.org/Olimex_Teres-A64
hardware sources:
https://github.com/OLIMEX/DIY-LAPTOP/tree/master/HARDWARE/A64-TERES/TERES-PCB1-A64-MAIN

This patch enables support for the A64-Teres-I board to u-boot,
including enabling screen backlight (lacking from Linux device-tree).

Linux commit details about the sun50i-a64-teres-i.dts sync:
"arm64: dts: allwinner: a64: Rename uart0_pins_a label to uart0_pb_pins"
(sha1: d91ebb95b96c8840932dc3a10c9f243712555467)

Cosmetic warnings regarding whitespace and placement of SPDX notice for
dts file was ignored.

config and .dtsi file are adapted from pinebook files.

Tested-by: Jonas Smedegaard <dr at jones.dk>
Signed-off-by: Jonas Smedegaard <dr at jones.dk>
---


Changes for v2:
  * List Icenowy and Jonas as MAINTAINERS
  * Add commit hash in linux tree for sun50i-a64-teres-i.dts
  * Drop superfluous and unsupported Author: tag

Changes for v3:
  * Use tags sun50i a64 (not sunxi)
  * List key, working, and known broken features
  * Reference upstream pages.
  * Reference linux commit

---
 MAINTAINERS                                 |   8 +
 arch/arm/dts/Makefile                       |   3 +-
 arch/arm/dts/sun50i-a64-teres-i-u-boot.dtsi |  41 +++
 arch/arm/dts/sun50i-a64-teres-i.dts         | 270 ++++++++++++++++++++
 configs/teres_i_defconfig                   |  21 ++
 5 files changed, 342 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm/dts/sun50i-a64-teres-i-u-boot.dtsi
 create mode 100644 arch/arm/dts/sun50i-a64-teres-i.dts
 create mode 100644 configs/teres_i_defconfig

diff --git a/MAINTAINERS b/MAINTAINERS
index c77abba1e5..d6ba87a0ba 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -319,6 +319,14 @@ F: arch/arm/include/asm/arch-sunxi/
 F:     arch/arm/mach-sunxi/
 F:     board/sunxi/
 
+ARM SUNXI OLIMEX TERES-I
+M:     Jonas Smedegaard <dr at jones.dk>
+M:     Icenowy Zheng <icenowy at aosc.io>
+S:     Maintained
+T:     git https://salsa.debian.org/js/u-boot
+F:     arch/arm/dts/sun50i-a64-teres-i*
+F:     configs/teres_i_defconfig
+
 ARM TEGRA
 M:     Tom Warren <twarren at nvidia.com>
 S:     Maintained
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 0aee8dfde0..eabe9e1ae3 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -483,7 +483,8 @@ dtb-$(CONFIG_MACH_SUN50I) += \
        sun50i-a64-pine64-plus.dtb \
        sun50i-a64-pine64.dtb \
        sun50i-a64-pinebook.dtb \
-       sun50i-a64-sopine-baseboard.dtb
+       sun50i-a64-sopine-baseboard.dtb \
+       sun50i-a64-teres-i.dtb
 dtb-$(CONFIG_MACH_SUN9I) += \
        sun9i-a80-optimus.dtb \
        sun9i-a80-cubieboard4.dtb \
diff --git a/arch/arm/dts/sun50i-a64-teres-i-u-boot.dtsi b/arch/arm/dts/sun50i-a64-teres-i-u-boot.dtsi
new file mode 100644
index 0000000000..1a64b7d09c
--- /dev/null
+++ b/arch/arm/dts/sun50i-a64-teres-i-u-boot.dtsi
@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2019 Vasily Khoruzhick <anarsoul at gmail.com>
+ *
+ */
+
+#include "sunxi-u-boot.dtsi"
+
+/ {
+       vdd_bl: regulator at 0 {
+               compatible = "regulator-fixed";
+               regulator-name = "bl-3v3";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               gpio = <&pio 7 6 GPIO_ACTIVE_HIGH>; /* PH6 */
+               enable-active-high;
+       };
+
+       backlight: backlight {
+               compatible = "pwm-backlight";
+               pwms = <&pwm 0 50000 0>;
+               brightness-levels = <0 5 10 15 20 30 40 55 70 85 100>;
+               default-brightness-level = <2>;
+               enable-gpios = <&pio 3 23 GPIO_ACTIVE_HIGH>; /* PD23 */
+               power-supply = <&vdd_bl>;
+       };
+};
+
+/* The ANX6345 eDP-bridge is on i2c */
+&i2c0 {
+       anx6345: edp-bridge at 38 {
+               compatible = "analogix,anx6345";
+               reg = <0x38>;
+               reset-gpios = <&pio 3 24 GPIO_ACTIVE_LOW>; /* PD24 */
+               status = "okay";
+       };
+};
+
+&pwm {
+       status = "okay";
+};
diff --git a/arch/arm/dts/sun50i-a64-teres-i.dts b/arch/arm/dts/sun50i-a64-teres-i.dts
new file mode 100644
index 0000000000..c455b24dd0
--- /dev/null
+++ b/arch/arm/dts/sun50i-a64-teres-i.dts
@@ -0,0 +1,270 @@
+/*
+ * Copyright (C) Harald Geyer <harald at ccbib.org>
+ * based on sun50i-a64-olinuxino.dts by Jagan Teki <jteki at openedev.com>
+ *
+ * SPDX-License-Identifier: (GPL-2.0 OR MIT)
+ */
+
+/dts-v1/;
+
+#include "sun50i-a64.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/pwm/pwm.h>
+
+/ {
+       model = "Olimex A64 Teres-I";
+       compatible = "olimex,a64-teres-i", "allwinner,sun50i-a64";
+
+       aliases {
+               serial0 = &uart0;
+       };
+
+       chosen {
+               stdout-path = "serial0:115200n8";
+
+               framebuffer-lcd {
+                       eDP25-supply = <&reg_dldo2>;
+                       eDP12-supply = <&reg_dldo3>;
+               };
+       };
+
+       gpio-keys {
+               compatible = "gpio-keys";
+
+               lid-switch {
+                       label = "Lid Switch";
+                       gpios = <&r_pio 0 8 GPIO_ACTIVE_LOW>; /* PL8 */
+                       linux,input-type = <EV_SW>;
+                       linux,code = <SW_LID>;
+                       wakeup-source;
+               };
+       };
+
+       leds {
+               compatible = "gpio-leds";
+
+               capslock {
+                       label = "teres-i:green:capslock";
+                       gpios = <&pio 2 7 GPIO_ACTIVE_HIGH>; /* PC7 */
+               };
+
+               numlock {
+                       label = "teres-i:green:numlock";
+                       gpios = <&pio 2 4 GPIO_ACTIVE_HIGH>; /* PC4 */
+               };
+       };
+
+       reg_usb1_vbus: usb1-vbus {
+               compatible = "regulator-fixed";
+               regulator-name = "usb1-vbus";
+               regulator-min-microvolt = <5000000>;
+               regulator-max-microvolt = <5000000>;
+               enable-active-high;
+               gpio = <&r_pio 0 7 GPIO_ACTIVE_HIGH>; /* PL7 */
+               status = "okay";
+       };
+
+       wifi_pwrseq: wifi_pwrseq {
+               compatible = "mmc-pwrseq-simple";
+               reset-gpios = <&r_pio 0 2 GPIO_ACTIVE_LOW>; /* PL2 */
+       };
+};
+
+&ehci1 {
+       status = "okay";
+};
+
+
+/* The ANX6345 eDP-bridge is on i2c0. There is no linux (mainline)
+ * driver for this chip at the moment, the bootloader initializes it.
+ * However it can be accessed with the i2c-dev driver from user space.
+ */
+&i2c0 {
+       clock-frequency = <100000>;
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c0_pins>;
+       status = "okay";
+};
+
+&mmc0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&mmc0_pins>;
+       vmmc-supply = <&reg_dcdc1>;
+       cd-gpios = <&pio 5 6 GPIO_ACTIVE_LOW>;
+       disable-wp;
+       bus-width = <4>;
+       status = "okay";
+};
+
+&mmc1 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&mmc1_pins>;
+       vmmc-supply = <&reg_aldo2>;
+       vqmmc-supply = <&reg_dldo4>;
+       mmc-pwrseq = <&wifi_pwrseq>;
+       bus-width = <4>;
+       non-removable;
+       status = "okay";
+
+       rtl8723bs: wifi at 1 {
+               reg = <1>;
+               interrupt-parent = <&r_pio>;
+               interrupts = <0 3 IRQ_TYPE_LEVEL_LOW>; /* PL3 */
+               interrupt-names = "host-wake";
+       };
+};
+
+&mmc2 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&mmc2_pins>;
+       vmmc-supply = <&reg_dcdc1>;
+       vqmmc-supply = <&reg_dcdc1>;
+       bus-width = <8>;
+       non-removable;
+       cap-mmc-hw-reset;
+       status = "okay";
+};
+
+&ohci1 {
+       status = "okay";
+};
+
+&r_rsb {
+       status = "okay";
+
+       axp803: pmic at 3a3 {
+               compatible = "x-powers,axp803";
+               reg = <0x3a3>;
+               interrupt-parent = <&r_intc>;
+               interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+               wakeup-source;
+       };
+};
+
+#include "axp803.dtsi"
+
+&reg_aldo1 {
+       regulator-always-on;
+       regulator-min-microvolt = <2800000>;
+       regulator-max-microvolt = <2800000>;
+       regulator-name = "vcc-pe";
+};
+
+&reg_aldo2 {
+       regulator-always-on;
+       regulator-min-microvolt = <3300000>;
+       regulator-max-microvolt = <3300000>;
+       regulator-name = "vcc-pl";
+};
+
+&reg_aldo3 {
+       regulator-always-on;
+       regulator-min-microvolt = <3000000>;
+       regulator-max-microvolt = <3000000>;
+       regulator-name = "vcc-pll-avcc";
+};
+
+&reg_dcdc1 {
+       regulator-always-on;
+       regulator-min-microvolt = <3300000>;
+       regulator-max-microvolt = <3300000>;
+       regulator-name = "vcc-3v3";
+};
+
+&reg_dcdc2 {
+       regulator-always-on;
+       regulator-min-microvolt = <1040000>;
+       regulator-max-microvolt = <1300000>;
+       regulator-name = "vdd-cpux";
+};
+
+/* DCDC3 is polyphased with DCDC2 */
+
+&reg_dcdc5 {
+       regulator-always-on;
+       regulator-min-microvolt = <1500000>;
+       regulator-max-microvolt = <1500000>;
+       regulator-name = "vcc-ddr3";
+};
+
+&reg_dcdc6 {
+       regulator-always-on;
+       regulator-min-microvolt = <1100000>;
+       regulator-max-microvolt = <1100000>;
+       regulator-name = "vdd-sys";
+};
+
+&reg_dldo1 {
+       regulator-min-microvolt = <3300000>;
+       regulator-max-microvolt = <3300000>;
+       regulator-name = "vcc-hdmi";
+};
+
+&reg_dldo2 {
+       regulator-min-microvolt = <2500000>;
+       regulator-max-microvolt = <2500000>;
+       regulator-name = "vcc-pd";
+};
+
+&reg_dldo3 {
+       regulator-min-microvolt = <1200000>;
+       regulator-max-microvolt = <1200000>;
+       regulator-name = "vdd-edp";
+};
+
+&reg_dldo4 {
+       regulator-min-microvolt = <3300000>;
+       regulator-max-microvolt = <3300000>;
+       regulator-name = "vcc-wifi-io";
+};
+
+&reg_eldo1 {
+       regulator-min-microvolt = <1800000>;
+       regulator-max-microvolt = <1800000>;
+       regulator-name = "cpvdd";
+};
+
+&reg_eldo2 {
+       regulator-min-microvolt = <1800000>;
+       regulator-max-microvolt = <1800000>;
+       regulator-name = "vcc-dvdd-csi";
+};
+
+&reg_fldo1 {
+       regulator-min-microvolt = <1200000>;
+       regulator-max-microvolt = <1200000>;
+       regulator-name = "vcc-1v2-hsic";
+};
+
+/*
+ * The A64 chip cannot work without this regulator off, although
+ * it seems to be only driving the AR100 core.
+ * Maybe we don't still know well about CPUs domain.
+ */
+&reg_fldo2 {
+       regulator-always-on;
+       regulator-min-microvolt = <1100000>;
+       regulator-max-microvolt = <1100000>;
+       regulator-name = "vdd-cpus";
+};
+
+&reg_rtc_ldo {
+       regulator-name = "vcc-rtc";
+};
+
+&simplefb_hdmi {
+       vcc-hdmi-supply = <&reg_dldo1>;
+};
+
+&uart0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&uart0_pb_pins>;
+       status = "okay";
+};
+
+&usbphy {
+       usb1_vbus-supply = <&reg_usb1_vbus>;
+       status = "okay";
+};
diff --git a/configs/teres_i_defconfig b/configs/teres_i_defconfig
new file mode 100644
index 0000000000..939dc24408
--- /dev/null
+++ b/configs/teres_i_defconfig
@@ -0,0 +1,21 @@
+CONFIG_ARM=y
+CONFIG_ARCH_SUNXI=y
+CONFIG_SPL=y
+CONFIG_MACH_SUN50I=y
+CONFIG_DRAM_CLK=552
+CONFIG_DRAM_ZQ=3881949
+CONFIG_MMC_SUNXI_SLOT_EXTRA=2
+CONFIG_I2C0_ENABLE=y
+# CONFIG_CMD_FLASH is not set
+# CONFIG_SPL_DOS_PARTITION is not set
+# CONFIG_SPL_EFI_PARTITION is not set
+CONFIG_DEFAULT_DEVICE_TREE="sun50i-a64-teres-i"
+CONFIG_DM_REGULATOR=y
+CONFIG_DM_REGULATOR_FIXED=y
+CONFIG_DM_PWM=y
+CONFIG_PWM_SUNXI=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE=y
+# CONFIG_USB_GADGET is not set
+CONFIG_VIDEO_BRIDGE=y
+CONFIG_VIDEO_BRIDGE_ANALOGIX_ANX6345=y
-- 
2.20.1

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