The Allwinner H6 SoC contains an RSB controller. It is almost completely undocumented, so it was missed when doing the initial SoC bringup.
This series adds the clock/reset, pin configuration, and device tree node needed to use the RSB controller. Since RSB is faster, simpler, and generally more reliable than the I2C controller IP in the SoC, switch to using it where possible. This was tested on an Orange Pi 3 and a Pine H64 model B. This series does not switch the Pine H64 to use RSB, as doing so would prevent accessing the external RTC that shares the I2C bus. Changes v1->v2: - Put the new values at the end of the DT binding headers Samuel Holland (4): clk: sunxi-ng: h6-r: Add R_APB2_RSB clock and reset pinctrl: sunxi: h6-r: Add s_rsb pin functions arm64: dts: allwinner: h6: Add RSB controller node arm64: dts: allwinner: h6: Use RSB for AXP805 PMIC connection .../dts/allwinner/sun50i-h6-beelink-gs1.dts | 38 +++++++++---------- .../dts/allwinner/sun50i-h6-orangepi-3.dts | 14 +++---- .../dts/allwinner/sun50i-h6-orangepi.dtsi | 22 +++++------ arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 19 ++++++++++ drivers/clk/sunxi-ng/ccu-sun50i-h6-r.c | 5 +++ drivers/clk/sunxi-ng/ccu-sun50i-h6-r.h | 2 +- drivers/pinctrl/sunxi/pinctrl-sun50i-h6-r.c | 2 + include/dt-bindings/clock/sun50i-h6-r-ccu.h | 2 + include/dt-bindings/reset/sun50i-h6-r-ccu.h | 1 + 9 files changed, 67 insertions(+), 38 deletions(-) -- 2.26.2 -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/linux-sunxi/20210103100007.32867-1-samuel%40sholland.org.
