[PATCH V2 00/13] ARM: Add minimal Raspberry Pi 4 support

[Stefan Wahren <wahrenst@gmx.net>]

This series adds minimal support for the new Raspberry Pi 4, so we are able
to login via debug UART.

Patch 1-2:   Prepare platform and DTS for the new SoC BMC2711
Patch 3-6:   Enable clock support for BCM2711
Patch 7-8:   Add I2C support for BCM2711
Patch 9-12:  Add Raspberry Pi 4 DTS support
Patch 13:    Update MAINTAINERS

Unfortunately the Raspberry Pi Foundation didn't released a
peripheral documentation for the new SoC yet. So we only have a preliminary
datasheet [1] and reduced schematics [2].

Known issues:
Since Linux 5.3-rc1 DMA doesn't work properly on that platform.
Nicolas Saenz Julienne investigates on that issue. As a temporary workaround
i reverted the following patch to test this series:

79a98672 "dma-mapping: remove dma_max_pfn"
7559d612 "mmc: core: let the dma map ops handle bouncing"

Changes in V2:
- use separate board file for BCM2711
- enable ARM_GIC for ARCH_BCM2835
- add Acked-by and Reviewed-by
- fix arm-pmu and timer nodes for BCM2711 reported by Marc Zyngier
- enable HDMI at board level
- move HDMI and pixelvalve into bcm2835-common.dtsi as suggested by Eric Anholt
- fix DWC2 probing warning by setting USB role to peripheral
- fix order of node references in bcm2711.dtsi
- disable I2C clock stretching quirk for BCM2711
- mark PLLD_PER as critical clock
- make PLLH clock unavailable on BCM2711
- fix compile warning in clk-bcm2835 for arm64

Changes since RFC:
- change BCM2838 -> BCM2711 as discussed in RFC
- update MAINTAINERS accordingly
- drop "spi: bcm2835: enable shared interrupt support" from series
- squash all pinctrl-bcm2835 changes into one patch
- introduce SoC specific clock registration as suggested by Florian
- fix watchdog probing for Raspberry Pi 4
- convert brcm,bcm2835.txt to json-schema
- move VC4 node to bcm2835-common.dtsi
- fallback to legacy pull config for Raspberry Pi 4
- revert unintended change of mailbox in bcm283x.dtsi
- add reference for arm64

[1] - https://www.raspberrypi.org/documentation/hardware/raspberrypi/bcm2711/rpi_DATA_2711_1p0_preliminary.pdf
[2] - https://www.raspberrypi.org/documentation/hardware/raspberrypi/schematics/rpi_SCH_4b_4p0_reduced.pdf

Stefan Wahren (13):
  ARM: dts: bcm283x: Enable HDMI at board level
  ARM: dts: bcm283x: Move BCM2835/6/7 specific to bcm2835-common.dtsi
  dt-bindings: bcm2835-cprman: Add bcm2711 support
  clk: bcm2835: Introduce SoC specific clock registration
  clk: bcm2835: Add BCM2711_CLOCK_EMMC2 support
  clk: bcm2835: Mark PLLD_PER as CRITICAL
  dt-bindings: i2c: bcm2835: Add brcm,bcm2711 compatible
  i2c: bcm2835: Avoid clk stretch quirk for BCM2711
  dt-bindings: arm: Convert BCM2835 board/soc bindings to json-schema
  dt-bindings: arm: bcm2835: Add Raspberry Pi 4 to DT schema
  ARM: bcm: Add support for BCM2711 SoC
  ARM: dts: Add minimal Raspberry Pi 4 support
  MAINTAINERS: Add BCM2711 to BCM2835 ARCH

 .../devicetree/bindings/arm/bcm/bcm2835.yaml       |  51 ++
 .../devicetree/bindings/arm/bcm/brcm,bcm2835.txt   |  67 ---
 .../bindings/clock/brcm,bcm2835-cprman.txt         |   4 +-
 .../devicetree/bindings/i2c/brcm,bcm2835-i2c.txt   |   4 +-
 MAINTAINERS                                        |   3 +-
 arch/arm/boot/dts/Makefile                         |   1 +
 arch/arm/boot/dts/bcm2711-rpi-4-b.dts              | 121 ++++
 arch/arm/boot/dts/bcm2711.dtsi                     | 662 +++++++++++++++++++++
 arch/arm/boot/dts/bcm2835-common.dtsi              | 183 ++++++
 arch/arm/boot/dts/bcm2835-rpi-a-plus.dts           |   2 +
 arch/arm/boot/dts/bcm2835-rpi-a.dts                |   2 +
 arch/arm/boot/dts/bcm2835-rpi-b-plus.dts           |   2 +
 arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts           |   2 +
 arch/arm/boot/dts/bcm2835-rpi-b.dts                |   2 +
 arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts          |   2 +
 arch/arm/boot/dts/bcm2835-rpi-zero-w.dts           |   2 +
 arch/arm/boot/dts/bcm2835-rpi-zero.dts             |   2 +
 arch/arm/boot/dts/bcm2835-rpi.dtsi                 |   5 -
 arch/arm/boot/dts/bcm2835.dtsi                     |   1 +
 arch/arm/boot/dts/bcm2836-rpi-2-b.dts              |   2 +
 arch/arm/boot/dts/bcm2836.dtsi                     |   1 +
 arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts         |   2 +
 arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts         |   2 +
 arch/arm/boot/dts/bcm2837-rpi-3-b.dts              |   2 +
 arch/arm/boot/dts/bcm2837-rpi-cm3-io3.dts          |   2 +
 arch/arm/boot/dts/bcm2837.dtsi                     |   1 +
 arch/arm/boot/dts/bcm283x-rpi-usb-peripheral.dtsi  |   7 +
 arch/arm/boot/dts/bcm283x.dtsi                     | 168 +-----
 arch/arm/mach-bcm/Kconfig                          |   3 +-
 arch/arm/mach-bcm/Makefile                         |   3 +-
 arch/arm/mach-bcm/bcm2711.c                        |  22 +
 drivers/clk/bcm/clk-bcm2835.c                      | 133 ++++-
 drivers/i2c/busses/i2c-bcm2835.c                   |  16 +-
 include/dt-bindings/clock/bcm2835.h                |   2 +
 34 files changed, 1221 insertions(+), 263 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/arm/bcm/bcm2835.yaml
 delete mode 100644 Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt
 create mode 100644 arch/arm/boot/dts/bcm2711-rpi-4-b.dts
 create mode 100644 arch/arm/boot/dts/bcm2711.dtsi
 create mode 100644 arch/arm/boot/dts/bcm2835-common.dtsi
 create mode 100644 arch/arm/boot/dts/bcm283x-rpi-usb-peripheral.dtsi
 create mode 100644 arch/arm/mach-bcm/bcm2711.c

--
2.7.4


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel