Hello, This patch series implements hardware semaphores found in SB2 bridge. Downstream BSP code assigns the same first semaphore to both CRT and Iso nodes, which seems inefficient in light of nine semaphore registers and is therefore deferred in this initial RFC. This series is based on my syscon series [1]. Latest experimental patches at: https://github.com/afaerber/linux/commits/rtd1295-next Have a lot of fun! Cheers, Andreas [1] https://patchwork.kernel.org/cover/11269453/ Cc: devicetree@xxxxxxxxxxxxxxx Cc: Rob Herring <robh+dt@xxxxxxxxxx> Cc: Cheng-Yu Lee <cylee12@xxxxxxxxxxx> Andreas Färber (5): dt-bindings: hwlock: Add Realtek RTD1195 SB2 hwspinlock: Add Realtek RTD1195 SB2 ARM: dts: rtd1195: Add SB2 sem nodes arm64: dts: realtek: rtd129x: Add SB2 sem nodes arm64: dts: realtek: rtd139x: Add SB2 sem nodes .../bindings/hwlock/realtek,rtd1195-sb2-sem.yaml | 42 +++++++++ arch/arm/boot/dts/rtd1195.dtsi | 14 +++ arch/arm64/boot/dts/realtek/rtd129x.dtsi | 14 +++ arch/arm64/boot/dts/realtek/rtd139x.dtsi | 14 +++ drivers/hwspinlock/Kconfig | 11 +++ drivers/hwspinlock/Makefile | 1 + drivers/hwspinlock/rtd1195_sb2_sem.c | 101 +++++++++++++++++++++ 7 files changed, 197 insertions(+) create mode 100644 Documentation/devicetree/bindings/hwlock/realtek,rtd1195-sb2-sem.yaml create mode 100644 drivers/hwspinlock/rtd1195_sb2_sem.c -- 2.16.4
