From: Nick Hawkins <nick.hawkins@xxxxxxx> The GXP SoC supports 10 I2C engines. Each I2C engine is completely independent and can function both as an I2C master and I2C slave. The I2C master can operate in a multi master environment. The engines support a scalable speed from 8kHZ to 1.5 Mhz. --- Changes since v4: *Removed use of i2c_global_init_done *Removed use of if else case for inline conditional *Removed error messages for timeouts and NACKS *Added bit definitions to replace magic values *Fix build error *Relocate Kconfig definition Changes since v3: *Switch engine variable to u32 *Disable IRQ on device remove with register write instead *Provided even greater description with the use of Phandle Changes since v2: *Disable IRQ on a device remove *Remove use of I2C_CLASS_DEPRECATED *Use i2c_parse_fw_timings instead of of_property_read_u32 *Remove redundant dev_err_probe as platform_get_irq already has one *Used __iomem instead of res->start to find physical address *Use BIT in gxp_i2c_irq_handler *Made value u8 instead of u16 for u8 read *Provided a better description of Phandle in yaml Changes since v1: *Removed yaml documentation of hpe,gxp-sysreg as it has been applied to syscon.yaml *Made i2cX a generic node name i2c in dts file *Added status field to the dtsi and the dts for i2c bus *Removed unnecessary size-cells and address-cells from yaml *Removed phandle from hpe,sysreg-phandle *Changed hpe,i2c-max-bus-freq to clock-frequency *Removed rogue tab in structure definition *Removed use of __iomem *base local variables as it was unnecessary *Switched #if IS_ENABLED() -> if (IS_ENABLED()) inside functions *Removed use of pr_* functions *Removed informational prints in register and unregister functions *Removed print from interrupt handler *Removed informational prints from probe function *Switched dev_err -> dev_err_probe in probe function *Used the respective helper for mapping the resource to __iomem* Nick Hawkins (5): i2c: hpe: Add GXP SoC I2C Controller dt-bindings: i2c: Add hpe,gxp-i2c ARM: dts: hpe: Add I2C Topology ARM: multi_v7_defconfig: add gxp i2c module MAINTAINERS: Add HPE GXP I2C Support .../devicetree/bindings/i2c/hpe,gxp-i2c.yaml | 59 ++ MAINTAINERS | 2 + arch/arm/boot/dts/hpe-bmc-dl360gen10.dts | 109 +++ arch/arm/boot/dts/hpe-gxp.dtsi | 125 ++++ arch/arm/configs/multi_v7_defconfig | 1 + drivers/i2c/busses/Kconfig | 7 + drivers/i2c/busses/Makefile | 1 + drivers/i2c/busses/i2c-gxp.c | 620 ++++++++++++++++++ 8 files changed, 924 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.yaml create mode 100644 drivers/i2c/busses/i2c-gxp.c -- 2.17.1
