[openwrt/openwrt] kernel: add support for DesignWare I2C Platform controller

[LEDE Commits]

noltari pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/84922a1e34f8fafeeebc3e6a25b93b95728c1706

commit 84922a1e34f8fafeeebc3e6a25b93b95728c1706
Author: Álvaro Fernández Rojas <noltari at gmail.com>
AuthorDate: Sun Jun 8 17:03:30 2025 +0200

    kernel: add support for DesignWare I2C Platform controller
    
    Add kernel package for DesignWare I2C platform controller.
    This controller is used on the RP1 SoC found on RPi 5 devices.
    
    Signed-off-by: Álvaro Fernández Rojas <noltari at gmail.com>
---
 package/kernel/linux/modules/i2c.mk | 22 ++++++++++++++++++++--
 target/linux/generic/config-6.12    |  2 ++
 target/linux/generic/config-6.6     |  2 ++
 3 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/package/kernel/linux/modules/i2c.mk b/package/kernel/linux/modules/i2c.mk
index 45001f328e..2c4652195c 100644
--- a/package/kernel/linux/modules/i2c.mk
+++ b/package/kernel/linux/modules/i2c.mk
@@ -116,17 +116,35 @@ I2C_DWPCI_MODULES:= \
 
 define KernelPackage/i2c-designware-pci
   $(call i2c_defaults,$(I2C_DWPCI_MODULES),59)
-  TITLE:=Synopsys DesignWare PCI
+  TITLE:=Synopsys DesignWare I2C PCI
   DEPENDS:=@PCI_SUPPORT +kmod-i2c-designware-core +kmod-i2c-ccgs-ucsi
 endef
 
 define KernelPackage/i2c-designware-pci/description
- Support for Synopsys DesignWare I2C controller. Only master mode is supported.
+ Support for Synopsys DesignWare I2C PCI controller. Only master mode is
+ supported.
 endef
 
 $(eval $(call KernelPackage,i2c-designware-pci))
 
 
+I2C_DWPLAT_MODULES:= \
+  CONFIG_I2C_DESIGNWARE_PLATFORM:drivers/i2c/busses/i2c-designware-platform
+
+define KernelPackage/i2c-designware-platform
+  $(call i2c_defaults,$(I2C_DWPLAT_MODULES),59)
+  TITLE:=Synopsys DesignWare I2C Platform
+  DEPENDS:=+kmod-i2c-designware-core
+endef
+
+define KernelPackage/i2c-designware-platform/description
+ Support for Synopsys DesignWare I2C Platform controller. Only master mode
+ is supported.
+endef
+
+$(eval $(call KernelPackage,i2c-designware-platform))
+
+
 I2C_GPIO_MODULES:= \
   CONFIG_I2C_GPIO:drivers/i2c/busses/i2c-gpio
 
diff --git a/target/linux/generic/config-6.12 b/target/linux/generic/config-6.12
index cb6faac20c..60d8edde00 100644
--- a/target/linux/generic/config-6.12
+++ b/target/linux/generic/config-6.12
@@ -2517,6 +2517,8 @@ CONFIG_HZ_100=y
 # CONFIG_I2C_DEBUG_BUS is not set
 # CONFIG_I2C_DEBUG_CORE is not set
 # CONFIG_I2C_DEMUX_PINCTRL is not set
+# CONFIG_I2C_DESIGNWARE_AMDPSP is not set
+# CONFIG_I2C_DESIGNWARE_BAYTRAIL is not set
 # CONFIG_I2C_DESIGNWARE_CORE is not set
 # CONFIG_I2C_DESIGNWARE_PCI is not set
 # CONFIG_I2C_DESIGNWARE_PLATFORM is not set
diff --git a/target/linux/generic/config-6.6 b/target/linux/generic/config-6.6
index fa9ab09cf3..0c3ba20753 100644
--- a/target/linux/generic/config-6.6
+++ b/target/linux/generic/config-6.6
@@ -2459,6 +2459,8 @@ CONFIG_HZ_100=y
 # CONFIG_I2C_DEBUG_BUS is not set
 # CONFIG_I2C_DEBUG_CORE is not set
 # CONFIG_I2C_DEMUX_PINCTRL is not set
+# CONFIG_I2C_DESIGNWARE_AMDPSP is not set
+# CONFIG_I2C_DESIGNWARE_BAYTRAIL is not set
 # CONFIG_I2C_DESIGNWARE_PCI is not set
 # CONFIG_I2C_DESIGNWARE_PLATFORM is not set
 # CONFIG_I2C_DESIGNWARE_SLAVE is not set