C++ (Cpp) MVEBU_CP_MPP_REGS示例

示例#1

文件： plat_bl31_setup.c 项目： coreboot/arm-trusted-firmware

static void marvell_bl31_mpp_init(int cp)
{
	uint32_t reg;

	/* need to do for CP#0 only */
	if (cp)
		return;


	/*
	 * Enable CP0 I2C MPPs (MPP: 37-38)
	 * U-Boot rely on proper MPP settings for I2C EEPROM usage
	 * (only for CP0)
	 */
	reg = mmio_read_32(MVEBU_CP_MPP_REGS(0, 4));
	mmio_write_32(MVEBU_CP_MPP_REGS(0, 4), reg | 0x2200000);
}

示例#2

文件： dram_port.c 项目： jbech-linaro/arm-trusted-firmware

static void mpp_config(void)
{
	uint32_t val;
	uintptr_t reg = MVEBU_CP_MPP_REGS(0, 4);

	/* configure CP0 MPP 37 and 38 to i2c */
	val = mmio_read_32(reg);
	val &= ~((MVEBU_MPP_CTRL_MASK << MVEBU_CP_MPP_CTRL37_OFFS) |
		(MVEBU_MPP_CTRL_MASK << MVEBU_CP_MPP_CTRL38_OFFS));
	val |= (MVEBU_CP_MPP_CTRL37_I2C0_SCK_ENA << MVEBU_CP_MPP_CTRL37_OFFS) |
		(MVEBU_CP_MPP_CTRL38_I2C0_SDA_ENA << MVEBU_CP_MPP_CTRL38_OFFS);
	mmio_write_32(reg, val);
}