This series adds pinctrl support to SpacemiT's K1 SoC, the controller uses a single register to describe all pin functions, including bias pull up/down, drive strength, schmitter trigger, slew rate, strong pull-up, mux mode. In patch #3, we add the pinctrl property of uart device for the Bananapi-F3 board. You can find the pinctrl docs of K1 here[1], and the original vendor's pinctrl dts data here[2]. Note, we rewrite this series as an independent pinctrl driver for K1 SoC, which means it does not use pinctrl-single driver as the model anymore, see the suggestion from Krzysztof at [3]. Link: https://developer.spacemit.com/documentation?token=An1vwTwKaigaXRkYfwmcznTXned [1] Link: https://gitee.com/bianbu-linux/linux-6.1/blob/bl-v1.0.y/arch/riscv/boot/dts/spacemit/k1-x_pinctrl.dtsi [2] Link: https://lore.kernel.org/all/b7a01cba-9f68-4a6f-9795-b9103ee81d8b@xxxxxxxxxx/ [3] Signed-off-by: Yixun Lan <dlan@xxxxxxxxxx> --- Changes in v4: - squash dts patch (drop patch #3) - collect review tags - Patch #2 - fix pin id mapping - improve pinconf debugfs - Link to v3: https://lore.kernel.org/r/20240828-02-k1-pinctrl-v3-0-1fed6a22be98@xxxxxxxxxx Changes in v3: - dt-bindings: drop vendor specific properties, fix format - rework pinctrl's gpio request function - fix logic of slew rate & drive strength - add power-source check - improve debugfs info - Link to v2: https://lore.kernel.org/r/20240825-02-k1-pinctrl-v2-0-ddd38a345d12@xxxxxxxxxx Changes in v2: - drop using pinctrl-single driver for K1 - rewite as independent pinctrl driver - rebase to v6.11-rc5 - Link to v1: https://lore.kernel.org/r/20240719-02-k1-pinctrl-v1-0-239ac5b77dd6@xxxxxxxxxx --- Yixun Lan (3): dt-bindings: pinctrl: spacemit: add support for K1 SoC pinctrl: spacemit: add support for SpacemiT K1 SoC riscv: dts: spacemit: add pinctrl property to uart0 in BPI-F3 .../bindings/pinctrl/spacemit,k1-pinctrl.yaml | 124 +++ arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts | 3 + arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi | 20 + arch/riscv/boot/dts/spacemit/k1.dtsi | 5 + drivers/pinctrl/Kconfig | 1 + drivers/pinctrl/Makefile | 1 + drivers/pinctrl/spacemit/Kconfig | 17 + drivers/pinctrl/spacemit/Makefile | 3 + drivers/pinctrl/spacemit/pinctrl-k1.c | 1078 ++++++++++++++++++++ drivers/pinctrl/spacemit/pinctrl-k1.h | 40 + 10 files changed, 1292 insertions(+) --- base-commit: 431c1646e1f86b949fa3685efc50b660a364c2b6 change-id: 20240708-02-k1-pinctrl-3a2b0ec13101 prerequisite-change-id: 20240626-k1-01-basic-dt-1aa31eeebcd2:v5 prerequisite-patch-id: 47dcf6861f7d434d25855b379e6d7ef4ce369c9c prerequisite-patch-id: 77787fe82911923aff15ccf565e8fa451538c3a6 prerequisite-patch-id: b0bdb1742d96c5738f05262c3b0059102761390b prerequisite-patch-id: 3927d39d8d77e35d5bfe53d9950da574ff8f2054 prerequisite-patch-id: a98039136a4796252a6029e474f03906f2541643 prerequisite-patch-id: c95f6dc0547a2a63a76e3cba0cf5c623b212b4e6 prerequisite-patch-id: 66e750e438ee959ddc2a6f0650814a2d8c989139 prerequisite-patch-id: 29a0fd8c36c1a4340f0d0b68a4c34d2b8abfb1ab prerequisite-patch-id: 0bdfff661c33c380d1cf00a6c68688e05f88c0b3 prerequisite-patch-id: 99f15718e0bfbb7ed1a96dfa19f35841b004dae9 Best regards, -- Yixun Lan <dlan@xxxxxxxxxx>
