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i2c: Add GXP SoC I2C Controller

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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.

Signed-off-by: Nick Hawkins <nick.hawkins@hpe.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
This commit is contained in:
Nick Hawkins
2023-02-17 09:50:50 -06:00
committed by Wolfram Sang
parent 681f87ddf9
commit 4a55ed6f89
3 changed files with 628 additions and 0 deletions
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7
drivers/i2c/busses/Kconfig
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@@ -659,6 +659,13 @@ config I2C_GPIO_FAULT_INJECTOR
faults to an I2C bus, so another bus master can be stress-tested.
This is for debugging. If unsure, say 'no'.
config I2C_GXP
tristate "GXP I2C Interface"
depends on ARCH_HPE_GXP || COMPILE_TEST
help
This enables support for GXP I2C interface. The I2C engines can be
either I2C master or I2C slaves.
config I2C_HIGHLANDER
tristate "Highlander FPGA SMBus interface"
depends on SH_HIGHLANDER || COMPILE_TEST

1
drivers/i2c/busses/Makefile
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@@ -128,6 +128,7 @@ obj-$(CONFIG_I2C_THUNDERX) += i2c-thunderx.o
obj-$(CONFIG_I2C_XILINX) += i2c-xiic.o
obj-$(CONFIG_I2C_XLP9XX) += i2c-xlp9xx.o
obj-$(CONFIG_I2C_RCAR) += i2c-rcar.o
obj-$(CONFIG_I2C_GXP) += i2c-gxp.o
# External I2C/SMBus adapter drivers
obj-$(CONFIG_I2C_DIOLAN_U2C) += i2c-diolan-u2c.o

620
drivers/i2c/busses/i2c-gxp.c Normal file
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