The gpio controller of K1 support basic GPIO functions, which capable of enabling as input, output. It can also be used as GPIO interrupt which able to detect rising edge, falling edge, or both. There are four GPIO banks, each consisting of 32 pins. The GPIO driver request the clock source from APBC block, In this series, I haven't added the clock support, but plan to fix it after clock driver is implemented/merged. The GPIO docs of K1 SoC can be found here, chapter 16.4 GPIO [1] Note, this patch need two prerequisite series, basic dt[2] and pinctrl[3] This patch series has been tested on Bananapi-F3 board, with following GPIO cases passed: 1) gpio input 2) gpio output - set to high, low 3) gpio interrupt - rising trigger, falling trigger, both edge trigger Link: https://developer.spacemit.com/documentation?token=Rn9Kw3iFHirAMgkIpTAcV2Arnkf [1] Link: https://lore.kernel.org/all/20240730-k1-01-basic-dt-v5-0-98263aae83be@xxxxxxxxxx [2] Link: https://lore.kernel.org/all/20241016-02-k1-pinctrl-v5-0-03d395222e4f@xxxxxxxxxx/ [3] Signed-off-by: Yixun Lan <dlan@xxxxxxxxxx> --- Changes in v2: - address dt-bindings comments, simplify example - rebase to 6.13-rc3 - Link to v1: https://lore.kernel.org/r/20240904-03-k1-gpio-v1-0-6072ebeecae0@xxxxxxxxxx --- Yixun Lan (3): dt-bindings: gpio: spacemit: add support for K1 SoC gpio: spacemit: add support for K1 SoC riscv: dts: spacemit: add gpio support for K1 SoC .../devicetree/bindings/gpio/spacemit,k1-gpio.yaml | 75 ++++ arch/riscv/boot/dts/spacemit/k1.dtsi | 13 + drivers/gpio/Kconfig | 7 + drivers/gpio/Makefile | 1 + drivers/gpio/gpio-spacemit-k1.c | 454 +++++++++++++++++++++ 5 files changed, 550 insertions(+) --- base-commit: 78d4f34e2115b517bcbfe7ec0d018bbbb6f9b0b8 change-id: 20240828-03-k1-gpio-61bf92f9032c 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 prerequisite-change-id: 20240708-02-k1-pinctrl-3a2b0ec13101: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 prerequisite-patch-id: 238db182251f2f79a947d16f0112a958d0837878 prerequisite-patch-id: 8c2cff9ceb9d062c91a34a39add45555bff2d545 prerequisite-patch-id: b93bb35db82d199d4d30deefbc34b8413539cf32 Best regards, -- Yixun Lan
