diff --git a/plat/allwinner/sun50i_h6/sunxi_power.c b/plat/allwinner/sun50i_h6/sunxi_power.c index f109cce..b6e07a2 100644 --- a/plat/allwinner/sun50i_h6/sunxi_power.c +++ b/plat/allwinner/sun50i_h6/sunxi_power.c @@ -28,13 +28,8 @@ { uint32_t reg; - /* get currently configured function for pins PL0 and PL1 */ - reg = mmio_read_32(SUNXI_R_PIO_BASE + 0x00); - if ((reg & 0xff) == 0x33) { - NOTICE("PMIC: already configured for TWI\n"); - } - /* switch pins PL0 and PL1 to I2C */ + reg = mmio_read_32(SUNXI_R_PIO_BASE + 0x00); mmio_write_32(SUNXI_R_PIO_BASE + 0x00, (reg & ~0xff) | 0x33); /* level 2 drive strength */ @@ -47,13 +42,11 @@ /* assert & de-assert reset of R_I2C */ reg = mmio_read_32(SUNXI_R_PRCM_BASE + 0x19c); - mmio_write_32(SUNXI_R_PRCM_BASE + 0x19c, 0); - reg = mmio_read_32(SUNXI_R_PRCM_BASE + 0x19c); - mmio_write_32(SUNXI_R_PRCM_BASE + 0x19c, reg | 0x00010000); + mmio_write_32(SUNXI_R_PRCM_BASE + 0x19c, reg & ~BIT(16)); + mmio_write_32(SUNXI_R_PRCM_BASE + 0x19c, reg | BIT(16)); /* un-gate R_I2C clock */ - reg = mmio_read_32(SUNXI_R_PRCM_BASE + 0x19c); - mmio_write_32(SUNXI_R_PRCM_BASE + 0x19c, reg | 0x00000001); + mmio_write_32(SUNXI_R_PRCM_BASE + 0x19c, reg | BIT(16) | BIT(0)); /* call mi2cv driver */ i2c_init((void *)SUNXI_R_I2C_BASE);