From 0066d75eb6c455f5ad783f524c40445c5b7a41ab Mon Sep 17 00:00:00 2001 From: Markus Stockhausen Date: Sun, 11 Aug 2024 13:21:26 -0400 Subject: [PATCH] realtek: 6.6: copy patch 311-add-i2c-mux-rtl9300-support Copy the patch file to 6.6. No further processing required as it applies cleanly to the new kernel Signed-off-by: Markus Stockhausen --- .../311-add-i2c-mux-rtl9300-support.patch | 46 +++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 target/linux/realtek/patches-6.6/311-add-i2c-mux-rtl9300-support.patch diff --git a/target/linux/realtek/patches-6.6/311-add-i2c-mux-rtl9300-support.patch b/target/linux/realtek/patches-6.6/311-add-i2c-mux-rtl9300-support.patch new file mode 100644 index 0000000000..d0bfba4538 --- /dev/null +++ b/target/linux/realtek/patches-6.6/311-add-i2c-mux-rtl9300-support.patch @@ -0,0 +1,46 @@ +From f4bdb7fdccdfe3fa382abe77f72a16c2f2e6add0 Mon Sep 17 00:00:00 2001 +From: Birger Koblitz +Date: Sat, 11 Dec 2021 20:25:37 +0100 +Subject: [PATCH] realtek: Add support for RTL9300/RTL9310 I2C multiplexing + +The RTL9300/RTL9310 I2C controllers have support for 2 independent I2C +masters, each with a fixed SCL pin, that cannot be changed. Each of these +masters can use 8 (RTL9300) or 16 (RTL9310) different pins for SDA. +This multiplexer directly controls the two masters and their shared +IO configuration registers to allow multiplexing between any of these +busses. The two masters cannot be used in parallel as the multiplex +is protected by a standard multiplex lock. + +Submitted-by: Birger Koblitz +--- + drivers/i2c/muxes/Kconfig | 9 +++++++ + drivers/i2c/muxes/Makefile | 1 + + 2 files changed, 10 insertions(+) + +--- a/drivers/i2c/muxes/Kconfig ++++ b/drivers/i2c/muxes/Kconfig +@@ -99,6 +99,15 @@ config I2C_MUX_REG + This driver can also be built as a module. If so, the module + will be called i2c-mux-reg. + ++config I2C_MUX_RTL9300 ++ tristate "RTL9300 based I2C multiplexer" ++ help ++ If you say yes to this option, support will be included for a ++ RTL9300 based I2C multiplexer. ++ ++ This driver can also be built as a module. If so, the module ++ will be called i2c-mux-reg. ++ + config I2C_DEMUX_PINCTRL + tristate "pinctrl-based I2C demultiplexer" + depends on PINCTRL && OF +--- a/drivers/i2c/muxes/Makefile ++++ b/drivers/i2c/muxes/Makefile +@@ -14,5 +14,6 @@ obj-$(CONFIG_I2C_MUX_PCA9541) += i2c-mux + obj-$(CONFIG_I2C_MUX_PCA954x) += i2c-mux-pca954x.o + obj-$(CONFIG_I2C_MUX_PINCTRL) += i2c-mux-pinctrl.o + obj-$(CONFIG_I2C_MUX_REG) += i2c-mux-reg.o ++obj-$(CONFIG_I2C_MUX_RTL9300) += i2c-mux-rtl9300.o + + ccflags-$(CONFIG_I2C_DEBUG_BUS) := -DDEBUG -- 2.30.2