PMX_I2C_MASK
.mask = PMX_UART0_MASK | PMX_I2C_MASK | PMX_SSP_MASK,
.mask = PMX_I2C_MASK,
.mask = PMX_I2C_MASK | PMX_SSP_CS_MASK,
DEFINE_MUXREG(i2c_pins, 0, PMX_I2C_MASK, 0);
.mask = PMX_I2C_MASK,
.val = PMX_I2C_MASK,