realtek: 6.6: copy patch 310-add-i2c-rtl9300-support

Copy the patch file to 6.6

Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>

diff --git a/target/linux/realtek/patches-6.6/310-add-i2c-rtl9300-support.patch b/target/linux/realtek/patches-6.6/310-add-i2c-rtl9300-support.patch
new file mode 100644 (file)
index 0000000..2125aea
--- /dev/null
+++ b/target/linux/realtek/patches-6.6/310-add-i2c-rtl9300-support.patch
@@ -0,0 +1,46 @@
+From 63a0a4d85bc900464c5b046b13808a582345f8c8 Mon Sep 17 00:00:00 2001
+From: Birger Koblitz <git@birger-koblitz.de>
+Date: Sat, 11 Dec 2021 20:14:47 +0100
+Subject: [PATCH] realtek: Add support for RTL9300/RTL9310 I2C controller
+
+This adds support for the RTL9300 and RTL9310 I2C controller.
+The controller implements the SMBus protocol for SMBus transfers
+over an I2C bus. The driver supports selecting one of the 2 possible
+SCL pins and any of the 8 possible SDA pins. Bus speeds of
+100kHz (standard speed) and 400kHz (high speed I2C) are supported.
+
+Submitted-by: Birger Koblitz <git@birger-koblitz.de>
+---
+ drivers/i2c/busses/Kconfig                    | 10 +++++++++
+ drivers/i2c/busses/Makefile                   |  1 +
+ 2 files changed, 11 insertions(+)
+
+--- a/drivers/i2c/busses/Kconfig
++++ b/drivers/i2c/busses/Kconfig
+@@ -949,6 +949,16 @@ config I2C_RK3X
+         This driver can also be built as a module. If so, the module will
+         be called i2c-rk3x.
+ 
++config I2C_RTL9300
++      tristate "Realtek RTL9300 I2C adapter"
++      depends on OF
++      help
++        Say Y here to include support for the I2C adapter in Realtek RTL9300
++        and RTL9310 SoCs.
++
++        This driver can also be built as a module. If so, the module will
++        be called i2c-rtl9300.
++
+ config HAVE_S3C2410_I2C
+       bool
+       help
+--- a/drivers/i2c/busses/Makefile
++++ b/drivers/i2c/busses/Makefile
+@@ -94,6 +94,7 @@ obj-$(CONFIG_I2C_QCOM_GENI)  += i2c-qcom-
+ obj-$(CONFIG_I2C_QUP)         += i2c-qup.o
+ obj-$(CONFIG_I2C_RIIC)                += i2c-riic.o
+ obj-$(CONFIG_I2C_RK3X)                += i2c-rk3x.o
++obj-$(CONFIG_I2C_RTL9300)     += i2c-rtl9300.o
+ obj-$(CONFIG_I2C_S3C2410)     += i2c-s3c2410.o
+ obj-$(CONFIG_I2C_SH7760)      += i2c-sh7760.o
+ obj-$(CONFIG_I2C_SH_MOBILE)   += i2c-sh_mobile.o