On 13.02.2023 23:05, Sergio Paracuellos wrote:
Hi all, This series make an update in the MT7621 SoC's watchdog driver code. This SoC already provides a system controller node to access reset status register needed for the watchdog. Instead of using MIPS architecture dependent operations in header 'asm/mach-ralink/ralink_regs.h' get node syscon regmap using 'syscon_regmap_lookup_by_compatible()' and use. regmap APIS. Driver is also using some globals that are not needed at all if a driver data structure is used along the code. Hence, add all new needed stuff inside a new driver data structure. With this changes driver can be properly compile tested. Thanks in advance for reviewing this! v1 of this series here [0]. v2 of this series here [1]. v3 of this series here [2]. v4 of this series here [3]. v5 of this series here [4]. Changes in v6: - Get regmap syscon using 'syscon_regmap_lookup_by_compatible()' - Add COMPILE_TEST and dependencies to Kconfig. - Collect Philippe Mathieu-Daudé 'Reviewed-by' tag for watchdog node warning fix. Changes in v5: - Drop patches related with device tree ABI breakage and only maintain the rest.
This makes me regret taking mt7621-dts out of drivers/staging. Clearly there were improvements to be made on the MT7621 drivers that would affect the devicetree binding. I don't think one would bat an eye to make dt-binding changes on a devicetree on drivers/staging.
I also want to make a similar change that would break the ABI. I want to split the MediaTek MIPS (currently called Ralink) pinctrl subdrivers further, namely mt7620.c, to split MT7628/MT7688 pinmux data from MT7620, so I can properly document which function can be given to which group(s) for the MT7628/MT7688 SoCs.
This means I've got to introduce a new compatible string for the MT76X8 SoCs which would cause the pinctrl driver to stop working with an old DT for the MT76X8 SoCs. By the nature of the change, I can't make a way around with the code like Sergio did in v6.
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