[PATCH 00/14] ARM: suniv: dts: update Allwinner F1C100

[Jesse Taube]

On 3/7/22 09:34, Andre Przywara wrote:
> The Allwinner F1C100 SoC didn't see much love since its initial merge in
> 2018: the originally submitted .dts files were very basic, and didn't
> cover such simple peripherals as MMC and SPI.
> On top of that the watchdog compatible string was wrong, leading to a
> non-functional watchdog and reset functionality.
> 
> This series aims to fix that, after the series MMC and SPI work, and
> make dtbs_check comes back clean.
> This was tested with mounting a filesystem on /dev/mmcblk0 on a
> LicheePi Nano, also with accessing the SPI flash through /dev/mtdblock
> and mtd_debug. Reboot and watchdog now also work.
> 
> Mainline U-Boot recently gained F1C100 support, and those DT updates are
> needed there as well to get full MMC and SPI access.
> 
> The series is structured as follows:
> - Patches 01/14 and 02/14 fix the watchdog, which allows to properly
>    reboot the system.
> - Patches 03-06 fix some shortcomings of the existing DT files, to make
>    them DT binding compliant.
> - Patches 07-09 are Jesse's recent MMC patches, with the comments from
>    the last version addressed [1].
> - Patches 10-12 add SPI support, to enable access to the SPI flash on
>    the LicheePi Nano board.
> - The final two patches (13/14 and 14/14) add the F1C100 platform to
>    the multi_v5_defconfig, since it was not covered by any other
>    defconfig before, and an ARMv5 compliant kernel is not commonly
>    offered by distributions.
> 
> I saw George's series from two years ago to add USB support[2], that
> looks good on the first glance, I will comment on that once I did some
> testing on that.
> 
> Cheers,
> Andre
> 
> Changelog for the MMC patches [1]:
> - bindings doc: extend commit message
> - .dtsi: extend commit message, re-order mmc0_pins node, add
>    drive-strength
> - .dts: extend commit message, add alias, regulator and disable-wp
> 
> [1] https://lore.kernel.org/linux-arm-kernel/20220130220325.1983918-1-Mr.Bossman075@gmail.com/
> [2] https://lore.kernel.org/linux-usb/20200331170219.267732-1-thirtythreeforty@gmail.com/
> 
> Andre Przywara (10):
>    dt-bindings: watchdog: sunxi: fix F1C100s compatible
>    ARM: dts: suniv: F1C100: fix watchdog compatible
>    dt-bindings: arm: sunxi: document LicheePi Nano name
>    ARM: dts: suniv: F1C100: fix CPU node
>    ARM: dts: suniv: F1C100: fix timer node
>    dt-bindings: spi: sunxi: document F1C100 controllers
>    ARM: dts: suniv: F1C100: add SPI support
>    ARM: dts: suniv: licheepi-nano: add SPI flash
>    ARM: configs: sync multi_v5_defconfig from savedefconfig
>    ARM: configs: multi_v5: Enable Allwinner F1C100
> 
> Jesse Taube (4):
>    ARM: dts: suniv: F1C100: add clock and reset macros
>    dt-bindings: mmc: sunxi: add Allwinner F1c100s compatible
>    ARM: dts: suniv: F1C100: add MMC controllers
>    ARM: dts: suniv: licheepi-nano: add microSD card
> 
>   .../devicetree/bindings/arm/sunxi.yaml        |   5 +
>   .../bindings/mmc/allwinner,sun4i-a10-mmc.yaml |   3 +
>   .../bindings/spi/allwinner,sun6i-a31-spi.yaml |   1 +
>   .../watchdog/allwinner,sun4i-a10-wdt.yaml     |   2 +-
>   .../boot/dts/suniv-f1c100s-licheepi-nano.dts  |  31 ++++++
>   arch/arm/boot/dts/suniv-f1c100s.dtsi          | 102 ++++++++++++++++--
>   arch/arm/configs/multi_v5_defconfig           |  25 ++---
>   7 files changed, 140 insertions(+), 29 deletions(-)
> It boots fine and SPI flash and MMC are found. Time keeping also works.
I didn't use the multi_v5_defconfig though.