target/linux/realtek/patches-5.10/310-add-i2c-rtl9300-support.patch

   1 From 63a0a4d85bc900464c5b046b13808a582345f8c8 Mon Sep 17 00:00:00 2001
   2 From: Birger Koblitz <git@birger-koblitz.de>
   3 Date: Sat, 11 Dec 2021 20:14:47 +0100
   4 Subject: [PATCH] realtek: Add support for RTL9300/RTL9310 I2C controller
   5
   6 This adds support for the RTL9300 and RTL9310 I2C controller.
   7 The controller implements the SMBus protocol for SMBus transfers
   8 over an I2C bus. The driver supports selecting one of the 2 possible
   9 SCL pins and any of the 8 possible SDA pins. Bus speeds of
  10 100kHz (standard speed) and 400kHz (high speed I2C) are supported.
  11
  12 Submitted-by: Birger Koblitz <git@birger-koblitz.de>
  13 ---
  14  drivers/i2c/busses/Kconfig                    | 10 +++++++++
  15  drivers/i2c/busses/Makefile                   |  1 +
  16  2 files changed, 11 insertions(+)
  17
  18 --- a/drivers/i2c/busses/Kconfig
  19 +++ b/drivers/i2c/busses/Kconfig
  20 @@ -954,6 +954,16 @@ config I2C_RK3X
  21           This driver can also be built as a module. If so, the module will
  22           be called i2c-rk3x.
  23
  24 +config I2C_RTL9300
  25 +       tristate "Realtek RTL9300 I2C adapter"
  26 +       depends on OF
  27 +       help
  28 +         Say Y here to include support for the I2C adapter in Realtek RTL9300
  29 +         and RTL9310 SoCs.
  30 +
  31 +         This driver can also be built as a module. If so, the module will
  32 +         be called i2c-rtl9300.
  33 +
  34  config HAVE_S3C2410_I2C
  35         bool
  36         help
  37 --- a/drivers/i2c/busses/Makefile
  38 +++ b/drivers/i2c/busses/Makefile
  39 @@ -95,6 +95,7 @@ obj-$(CONFIG_I2C_QCOM_GENI)   += i2c-qcom-
  40  obj-$(CONFIG_I2C_QUP)          += i2c-qup.o
  41  obj-$(CONFIG_I2C_RIIC)         += i2c-riic.o
  42  obj-$(CONFIG_I2C_RK3X)         += i2c-rk3x.o
  43 +obj-$(CONFIG_I2C_RTL9300)      += i2c-rtl9300.o
  44  obj-$(CONFIG_I2C_S3C2410)      += i2c-s3c2410.o
  45  obj-$(CONFIG_I2C_SH7760)       += i2c-sh7760.o
  46  obj-$(CONFIG_I2C_SH_MOBILE)    += i2c-sh_mobile.o