From: Nick Hawkins <[email protected]>
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 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 | 57 ++
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 | 602 ++++++++++++++++++
8 files changed, 904 insertions(+)
create mode 100644 Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.yaml
create mode 100644 drivers/i2c/busses/i2c-gxp.c
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2.17.1