Hello again! This is V2 of this series [5], with some changes that were requested and others that were made after testing on more devices. Thank you for all of your feedback! A changelog is available below. ================== Back in 2020, two Allwinner employees, Yangtao Li and Shuosheng Huang, each submitted a patch series for the A100 series of SoCs; [1] intended to add support for the watchdog, ARM PMU, DMA, USB, and (e)MMC controller, and [2] implemented DVFS support. Some patches from the first series landed, but the rest were seemingly abandoned. Although references to the A100 have been removed by Allwinner, it is believed that the A133 and A133 Plus, which are still available, are simply better binned variants of the A100; no other differences have been noted thus far, and the drivers for the A100 work on the A133 without any additional modifications. There has been a resurgence of interest in the A133; patches to allow mainline U-Boot to run on these devices are currently in progress. I have rebased the patches that failed to land, applying the feedback provided by maintainers at the time. Some DT binding patches were added, as there were a few cases where compatibles were used without being documented. Minor reworks were necessary to apply certain patches, as the drivers they modified have matured over time. Patches 1 and 2 add PMU and watchdog nodes to the device tree. This is followed by patches 3-7, which implement support for the USB host and OTG peripherals. Patches 8-10 add MMC nodes, rounding out what originally made up the first patch series; support for these already exists from earlier patches, though patch 7 fixes an issue with the clock definitions preventing the MMC controller from initializing. Patches 11-13 finish the job of the second original series and this series, implementing OPP and enabling DVFS on these SoCs. This series is also available on GitHub [3]. A sincere thanks to Andre for encouraging me to submit these patches, Parthiban for testing this tree on his board, and to the linux-sunxi community and its resources for pointing me to these abandoned series in the first place [4]. [1] https://patchwork.kernel.org/project/linux-arm-kernel/list/?series=380887&archive=both&state=* [2] https://patchwork.kernel.org/project/linux-arm-kernel/list/?series=396055&archive=both&state=* [3] https://github.com/BrokenR3C0RD/linux-a100/compare/c2ee9f59..allwinner-a100 [4] https://linux-sunxi.org/Linux_mainlining_effort#Work_In_Progress [5] https://lore.kernel.org/all/20241024170540.2721307-1-masterr3c0rd@epochal.quest/ Changelog - V2: - Change name of opp table to match bindings and pass CHECK_DTBS - Drop "phy: sun4i-usb: add support for A100 USB PHY" in favor of falling back to "allwinner,sun20i-d1-usb-phy". - Add "allwinner,sun50i-a100" to the cpufreq-dt-platform blacklist - Update dt-bindings changes to keep intended ordering of compatibles - Update regs that were too small in the usbphy bindings - Add patch to remove CLK_SET_RATE_NO_REPARENT from the MMC drivers. - Fix error in the description of "arm64: dts: allwinner: a100: add usb related nodes" - Add acks and reviews from Andre and Rob Cody Eksal (5): dt-bindings: phy: sun50i-a64: add a100 compatible dt-bindings: usb: Add A100 compatible string dt-bindings: usb: sunxi-musb: Add A100 compatible string clk: sunxi-ng: a100: enable MMC clock reparenting dt-bindings: opp: h6: Add A100 operating points Shuosheng Huang (2): cpufreq: sun50i: add a100 cpufreq support arm64: dts: allwinner: a100: Add CPU Operating Performance Points table Yangtao Li (6): arm64: dts: allwinner: A100: Add PMU mode arm64: dts: allwinner: a100: add watchdog node arm64: dts: allwinner: a100: add usb related nodes arm64: allwinner: A100: enable EHCI, OHCI and USB PHY nodes in Perf1 arm64: allwinner: a100: Add MMC related nodes arm64: dts: allwinner: a100: perf1: Add eMMC and MMC node .../allwinner,sun50i-h6-operating-points.yaml | 1 + .../phy/allwinner,sun50i-a64-usb-phy.yaml | 10 +- .../usb/allwinner,sun4i-a10-musb.yaml | 1 + .../devicetree/bindings/usb/generic-ehci.yaml | 1 + .../devicetree/bindings/usb/generic-ohci.yaml | 1 + .../allwinner/sun50i-a100-allwinner-perf1.dts | 60 ++++++ .../dts/allwinner/sun50i-a100-cpu-opp.dtsi | 90 ++++++++ .../arm64/boot/dts/allwinner/sun50i-a100.dtsi | 193 +++++++++++++++++- drivers/clk/sunxi-ng/ccu-sun50i-a100.c | 6 +- drivers/cpufreq/cpufreq-dt-platdev.c | 1 + drivers/cpufreq/sun50i-cpufreq-nvmem.c | 28 +++ 11 files changed, 383 insertions(+), 9 deletions(-) create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-a100-cpu-opp.dtsi base-commit: 0fc810ae3ae110f9e2fcccce80fc8c8d62f97907 -- 2.47.0
