Support NVIDIA Tegra-based Acer A500 and Nexus 7 devices

Hello,

This series introduces upstream kernel support for Acer Iconia Tab A500 and ASUS Google Nexus 7 tablet devices. Please review and apply, thanks in advance.

Changelog:

v6: - Corrected PMIC's RTC alias in the DTs. Sometime ago I renamed the
PMIC's node to match the modern upstream styling, but forgot to change the RTC alias. Now PMIC RTC alias uses node's handle instead of string.

- Removed "panel: " handle from device trees, which became unused after v5 and I just missed to remove it.

v5: - After spending some more time on adding LVDS encoder bridge support
to the Tegra DRM driver, I'm now having a second thought and agree with Thierry Reding that in a longer run it should be better not to mix old nvidia,panel with new output graph in device-tree. So the nvidia,panel phandle is removed now in both A500 and Nexus 7 DTs.

v4: - Corrected CPU's thermal zone on both A500 and Nexus 7, which
should use the remote thermal sensor (Tegra chip) instead of the local ("skin" temperature).

- Added default PMIC pinmux state on Nexus 7, for completeness.

- Added PMIC cpu_pwr_req GPIO hog on Nexus 7, for completeness.

- Renamed thermal sensor node label to NCT72 on Nexus 7 to match the actual hardware (NCT72 is compatible with NCT1008). For completeness.

- Added always-on USB AVDD regulator on Nexus 7, which is controlled by the PMIC GPIO. For completeness.

- Added PMIC GPIO enable-control to the 3v3_sys regulator on Nexus 7, for completeness.

- Added CONFIG_NAMESPACES, CONFIG_USER_NS, CONFIG_SECCOMP and CONFIG_PINCTRL_MAX77620 to the tegra_defconfig. The first three options are must-have for the modern userspace, the last is somewhat actual now since the default PMIC pinmux state is added to the N7 DT.

v3: - Improved device-tree node-names in accordance to review comments that
were made by Thierry Reding to v2.

- Corrected LVDS encoder powerdown-GPIO polarity on both A500 and Nexus 7 because I implemented the DRM bridges support in the Tegra DRM driver and found that there was a mistake in the device-trees. The updated polarity also matches the boards schematics. Now DRM bridges support becomes mandatory since LVDS is getting disabled during of the encoder driver probing. I'll send the DRM patch separately from this series.

- Replaced recently deprecated CONFIG_DRM_LVDS_ENCODER with the new CONFIG_DRM_LVDS_CODEC in tegra_defconfig.

- Added more config options to tegra_defconfig, like pstore and thermal.

- Added atmel,cfg_name to the A500 DT, which is a new upcoming property in 5.8+ that allows to specify the per-board hardware config file name.

v2: - Corrected "volume down" key-label in the grouper's device-tree and
improved some other names in device-trees.

- Added optional (upcoming in 5.8+) VDD/AVDD regulators to the touchscreen node in A500 device-tree.

Dmitry Osipenko (6):
ARM: tegra: Add device-tree for Acer Iconia Tab A500
ARM: tegra: Add device-tree for ASUS Google Nexus 7
dt-bindings: Add vendor prefix for Acer Inc.
dt-bindings: ARM: tegra: Add Acer Iconia Tab A500
dt-bindings: ARM: tegra: Add ASUS Google Nexus 7
ARM: tegra_defconfig: Enable options useful for Nexus 7 and Acer A500

 .../devicetree/bindings/arm/tegra.yaml        |   10 +
 .../devicetree/bindings/vendor-prefixes.yaml  |    2 +
 arch/arm/boot/dts/Makefile                    |    3 +
 .../boot/dts/tegra20-acer-a500-picasso.dts    | 1457 +++++++++
 .../tegra30-asus-nexus7-grouper-common.dtsi   | 2679 +++++++++++++++++
 .../boot/dts/tegra30-asus-nexus7-grouper.dts  |  463 +++
 .../boot/dts/tegra30-asus-nexus7-tilapia.dts  |  549 ++++
 arch/arm/configs/tegra_defconfig              |   42 +
 8 files changed, 5205 insertions(+)
 create mode 100644 arch/arm/boot/dts/tegra20-acer-a500-picasso.dts
 create mode 100644 arch/arm/boot/dts/tegra30-asus-nexus7-grouper-common.dtsi
 create mode 100644 arch/arm/boot/dts/tegra30-asus-nexus7-grouper.dts
 create mode 100644 arch/arm/boot/dts/tegra30-asus-nexus7-tilapia.dts

2.26.0

Add device-tree for Acer Iconia Tab A500, which is NVIDIA Tegra20-based tablet device.

---
 arch/arm/boot/dts/Makefile                    |    1 +
 .../boot/dts/tegra20-acer-a500-picasso.dts    | 1457 +++++++++++++++++
 2 files changed, 1458 insertions(+)
 create mode 100644 arch/arm/boot/dts/tegra20-acer-a500-picasso.dts

index 47af4ee65673..ee7c05a2fe86 100644
@@ -1188,6 +1188,7 @@ dtb-$(CONFIG_MACH_SUNIV) += \
 dtb-$(CONFIG_ARCH_TANGO) += \
 	tango4-vantage-1172.dtb
 dtb-$(CONFIG_ARCH_TEGRA_2x_SOC) += \
+	tegra20-acer-a500-picasso.dtb \
 	tegra20-harmony.dtb \
 	tegra20-colibri-eval-v3.dtb \
 	tegra20-colibri-iris.dtb \

2.26.0

There are two variants of the NVIDIA Tegra30-based Nexus 7 device:
WiFi-only (named Grouper) and GSM (named Tilapia). This patch adds device-trees for the both variants.

---
 arch/arm/boot/dts/Makefile                    |    2 +
 .../tegra30-asus-nexus7-grouper-common.dtsi   | 2679 +++++++++++++++++
 .../boot/dts/tegra30-asus-nexus7-grouper.dts  |  463 +++
 .../boot/dts/tegra30-asus-nexus7-tilapia.dts  |  549 ++++
 4 files changed, 3693 insertions(+)
 create mode 100644 arch/arm/boot/dts/tegra30-asus-nexus7-grouper-common.dtsi
 create mode 100644 arch/arm/boot/dts/tegra30-asus-nexus7-grouper.dts
 create mode 100644 arch/arm/boot/dts/tegra30-asus-nexus7-tilapia.dts

index ee7c05a2fe86..8e39fec189d1 100644
@@ -1202,6 +1202,8 @@ dtb-$(CONFIG_ARCH_TEGRA_2x_SOC) += \
 dtb-$(CONFIG_ARCH_TEGRA_3x_SOC) += \
 	tegra30-apalis-eval.dtb \
 	tegra30-apalis-v1.1-eval.dtb \
+	tegra30-asus-nexus7-grouper.dtb \
+	tegra30-asus-nexus7-tilapia.dtb \
 	tegra30-beaver.dtb \
 	tegra30-cardhu-a02.dtb \
 	tegra30-cardhu-a04.dtb \

2.26.0

Part of the diff is not shown here. View the raw message.

Acer is a hardware and electronics corporation, specializing in advanced electronics technology. Acer's products include desktop PCs, laptop PCs, tablets, servers, displays, storage devices, virtual reality devices, smartphones and peripherals. Their web site is http://www.acer.com/.

---
 Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
 1 file changed, 2 insertions(+)

index e9a6dd6b03a2..315cf1de4b34 100644
@@ -27,6 +27,8 @@ patternProperties:
     description: Abilis Systems
   "^abracon,.*":
     description: Abracon Corporation
+  "^acer,.*":
+    description: Acer Inc.
   "^acme,.*":
     description: Acme Systems srl
   "^actions,.*":

2.26.0

Add a binding for the Tegra20-based Acer Iconia Tab A500 tablet device.

---
 Documentation/devicetree/bindings/arm/tegra.yaml | 3 +++
 1 file changed, 3 insertions(+)

index 60b38eb5c61a..7fd0b66c69b2 100644
@@ -34,6 +34,9 @@ properties:
               - toradex,colibri_t20-iris
           - const: toradex,colibri_t20
           - const: nvidia,tegra20
+      - items:
+          - const: acer,picasso
+          - const: nvidia,tegra20
       - items:
           - enum:
               - nvidia,beaver

2.26.0

Add a binding for the Tegra30-based ASUS Google Nexus 7 tablet device.

---
 Documentation/devicetree/bindings/arm/tegra.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

index 7fd0b66c69b2..fb3bbf7a5fb4 100644
@@ -62,6 +62,13 @@ properties:
               - toradex,colibri_t30-eval-v3
           - const: toradex,colibri_t30
           - const: nvidia,tegra30
+      - items:
+          - const: asus,grouper
+          - const: nvidia,tegra30
+      - items:
+          - const: asus,tilapia
+          - const: asus,grouper
+          - const: nvidia,tegra30
       - items:
           - enum:
               - nvidia,dalmore

2.26.0

Enable several very useful options and drivers for hardware that is found on Nexus 7 and Acer A500 tablet devices. Please note that some drivers may require firmware files extracted from original Android image.

---
 arch/arm/configs/tegra_defconfig | 42 ++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

index 0029259a6bf5..b382f06f835b 100644
@@ -10,6 +10,8 @@ CONFIG_RT_GROUP_SCHED=y
 CONFIG_CGROUP_FREEZER=y
 CONFIG_CGROUP_CPUACCT=y
 CONFIG_CGROUP_DEBUG=y
+CONFIG_NAMESPACES=y
+CONFIG_USER_NS=y
 CONFIG_BLK_DEV_INITRD=y
 # CONFIG_ELF_CORE is not set
 CONFIG_EMBEDDED=y

@@ -18,6 +20,7 @@ CONFIG_SLAB=y
 CONFIG_ARCH_TEGRA=y
 CONFIG_SMP=y
 CONFIG_HIGHMEM=y
+CONFIG_SECCOMP=y
 CONFIG_ZBOOT_ROM_TEXT=0x0
 CONFIG_ZBOOT_ROM_BSS=0x0
 CONFIG_KEXEC=y

@@ -63,11 +66,17 @@ CONFIG_BT_RFCOMM=y
 CONFIG_BT_BNEP=y
 CONFIG_BT_HIDP=y
 CONFIG_BT_HCIBTUSB=m
+CONFIG_BT_HCIUART=y
+CONFIG_BT_HCIUART_BCM=y
 CONFIG_CFG80211=y
 CONFIG_MAC80211=y
 CONFIG_RFKILL=y
 CONFIG_RFKILL_INPUT=y
 CONFIG_RFKILL_GPIO=y
+CONFIG_NFC=y
+CONFIG_NFC_HCI=y
+CONFIG_NFC_SHDLC=y
+CONFIG_NFC_PN544_I2C=y
 CONFIG_PCI=y
 CONFIG_PCIEPORTBUS=y
 CONFIG_PCI_MSI=y

@@ -106,20 +115,24 @@ CONFIG_INPUT_JOYDEV=y
 CONFIG_INPUT_EVDEV=y
 CONFIG_KEYBOARD_GPIO=y
 CONFIG_KEYBOARD_TEGRA=y
+CONFIG_KEYBOARD_CAP11XX=y
 CONFIG_KEYBOARD_CROS_EC=y
 CONFIG_MOUSE_PS2_ELANTECH=y
 CONFIG_INPUT_TOUCHSCREEN=y
 CONFIG_TOUCHSCREEN_ATMEL_MXT=y
+CONFIG_TOUCHSCREEN_ELAN=y
 CONFIG_TOUCHSCREEN_WM97XX=y
 # CONFIG_TOUCHSCREEN_WM9705 is not set
 # CONFIG_TOUCHSCREEN_WM9713 is not set
 CONFIG_TOUCHSCREEN_STMPE=y
 CONFIG_INPUT_MISC=y
+CONFIG_INPUT_GPIO_VIBRA=y
 # CONFIG_LEGACY_PTYS is not set
 CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_SERIAL_OF_PLATFORM=y
 CONFIG_SERIAL_TEGRA=y
+CONFIG_SERIAL_DEV_BUS=y
 # CONFIG_HW_RANDOM is not set
 # CONFIG_I2C_COMPAT is not set
 CONFIG_I2C_CHARDEV=y

@@ -131,10 +144,12 @@ CONFIG_SPI_TEGRA114=y
 CONFIG_SPI_TEGRA20_SFLASH=y
 CONFIG_SPI_TEGRA20_SLINK=y
 CONFIG_PINCTRL_AS3722=y
+CONFIG_PINCTRL_MAX77620=y
 CONFIG_PINCTRL_PALMAS=y
 CONFIG_GPIO_SYSFS=y
 CONFIG_GPIO_PCA953X=y
 CONFIG_GPIO_PCA953X_IRQ=y
+CONFIG_GPIO_MAX77620=y
 CONFIG_GPIO_PALMAS=y
 CONFIG_GPIO_TPS6586X=y
 CONFIG_GPIO_TPS65910=y

@@ -142,13 +157,21 @@ CONFIG_POWER_RESET=y
 CONFIG_POWER_RESET_AS3722=y
 CONFIG_POWER_RESET_GPIO=y
 CONFIG_BATTERY_SBS=y
+CONFIG_BATTERY_BQ27XXX=y
+CONFIG_CHARGER_GPIO=y
+CONFIG_CHARGER_SMB347=y
 CONFIG_CHARGER_TPS65090=y
 CONFIG_SENSORS_LM90=y
 CONFIG_SENSORS_LM95245=y
+CONFIG_THERMAL=y
+CONFIG_THERMAL_STATISTICS=y
+CONFIG_CPU_THERMAL=y
 CONFIG_WATCHDOG=y
+CONFIG_MAX77620_WATCHDOG=y
 CONFIG_TEGRA_WATCHDOG=y
 CONFIG_MFD_AS3722=y
 CONFIG_MFD_CROS_EC=y
+CONFIG_MFD_MAX77620=y
 CONFIG_MFD_MAX8907=y
 CONFIG_MFD_STMPE=y
 CONFIG_MFD_PALMAS=y

@@ -159,6 +182,7 @@ CONFIG_REGULATOR=y
 CONFIG_REGULATOR_FIXED_VOLTAGE=y
 CONFIG_REGULATOR_AS3722=y
 CONFIG_REGULATOR_GPIO=y
+CONFIG_REGULATOR_MAX77620=y
 CONFIG_REGULATOR_MAX8907=y
 CONFIG_REGULATOR_PALMAS=y
 CONFIG_REGULATOR_TPS51632=y

@@ -174,7 +198,10 @@ CONFIG_USB_GSPCA=y
 CONFIG_DRM=y
 CONFIG_DRM_NOUVEAU=m
 CONFIG_DRM_TEGRA=y
+CONFIG_DRM_TEGRA_STAGING=y
+CONFIG_DRM_PANEL_LVDS=y
 CONFIG_DRM_PANEL_SIMPLE=y
+CONFIG_DRM_LVDS_CODEC=y
 # CONFIG_LCD_CLASS_DEVICE is not set
 CONFIG_BACKLIGHT_CLASS_DEVICE=y
 # CONFIG_BACKLIGHT_GENERIC is not set

@@ -238,6 +265,7 @@ CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_AS3722=y
 CONFIG_RTC_DRV_DS1307=y
 CONFIG_RTC_DRV_MAX8907=y
+CONFIG_RTC_DRV_MAX77686=y
 CONFIG_RTC_DRV_PALMAS=y
 CONFIG_RTC_DRV_TPS6586X=y
 CONFIG_RTC_DRV_TPS65910=y

@@ -259,11 +287,18 @@ CONFIG_ARCH_TEGRA_2x_SOC=y
 CONFIG_ARCH_TEGRA_3x_SOC=y
 CONFIG_ARCH_TEGRA_114_SOC=y
 CONFIG_ARCH_TEGRA_124_SOC=y
+CONFIG_PM_DEVFREQ=y
+CONFIG_ARM_TEGRA_DEVFREQ=y
+CONFIG_ARM_TEGRA20_DEVFREQ=y
 CONFIG_MEMORY=y
 CONFIG_IIO=y
+CONFIG_KXCJK1013=y
 CONFIG_MPU3050_I2C=y
+CONFIG_INV_MPU6050_I2C=y
+CONFIG_AL3010=y
 CONFIG_SENSORS_ISL29018=y
 CONFIG_SENSORS_ISL29028=y
+CONFIG_AK8974=y
 CONFIG_AK8975=y
 CONFIG_PWM=y
 CONFIG_PWM_TEGRA=y

@@ -283,6 +318,13 @@ CONFIG_TMPFS_POSIX_ACL=y
 CONFIG_SQUASHFS=y
 CONFIG_SQUASHFS_LZO=y
 CONFIG_SQUASHFS_XZ=y
+CONFIG_PSTORE=y
+CONFIG_PSTORE_LZO_COMPRESS=y
+CONFIG_PSTORE_LZ4_COMPRESS=y
+CONFIG_PSTORE_LZ4HC_COMPRESS=y
+CONFIG_PSTORE_842_COMPRESS=y
+CONFIG_PSTORE_CONSOLE=y
+CONFIG_PSTORE_RAM=y
 CONFIG_NFS_FS=y
 CONFIG_NFS_V4=y
 CONFIG_ROOT_NFS=y

2.26.0