GPIO21_I2C_SCL 171 arch/arm/mach-pxa/cm-x300.c GPIO21_I2C_SCL, GPIO21_I2C_SCL 54 arch/arm/mach-pxa/colibri-pxa300.c GPIO21_I2C_SCL, GPIO21_I2C_SCL 126 arch/arm/mach-pxa/zylonite_pxa300.c GPIO21_I2C_SCL,