diff options
author | Samuel Holland <samuel@sholland.org> | 2019-10-20 14:17:30 -0500 |
---|---|---|
committer | Samuel Holland <samuel@sholland.org> | 2019-12-13 19:20:36 -0600 |
commit | eb75518d988e8a59f21ab1ac77e5ae928526e06e (patch) | |
tree | 5becddf119a6f5878e2c3a49c7b4e6e7a6f9753a /plat/allwinner/common/sunxi_common.c | |
parent | 1a433965afd5734cec1dbc9d5e3b878ccd3eb98c (diff) | |
download | trusted-firmware-a-eb75518d988e8a59f21ab1ac77e5ae928526e06e.tar.gz |
allwinner: Enable clock before resetting I2C/RSB
The clock must be running for the module to be reset.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Change-Id: Ic8fafc946f3a1a697174b91288e357ffa033ab9a
Diffstat (limited to 'plat/allwinner/common/sunxi_common.c')
-rw-r--r-- | plat/allwinner/common/sunxi_common.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/plat/allwinner/common/sunxi_common.c b/plat/allwinner/common/sunxi_common.c index 0797452a6e..1e21a42626 100644 --- a/plat/allwinner/common/sunxi_common.c +++ b/plat/allwinner/common/sunxi_common.c @@ -150,16 +150,16 @@ int sunxi_init_platform_r_twi(uint16_t socid, bool use_rsb) /* set both pins to pull-up */ mmio_clrsetbits_32(SUNXI_R_PIO_BASE + 0x1c, 0x0fU, 0x5U); - /* assert, then de-assert reset of I2C/RSB controller */ - mmio_clrbits_32(SUNXI_R_PRCM_BASE + reset_offset, device_bit); - mmio_setbits_32(SUNXI_R_PRCM_BASE + reset_offset, device_bit); - /* un-gate clock */ if (socid != SUNXI_SOC_H6) mmio_setbits_32(SUNXI_R_PRCM_BASE + 0x28, device_bit); else mmio_setbits_32(SUNXI_R_PRCM_BASE + 0x19c, device_bit | BIT(0)); + /* assert, then de-assert reset of I2C/RSB controller */ + mmio_clrbits_32(SUNXI_R_PRCM_BASE + reset_offset, device_bit); + mmio_setbits_32(SUNXI_R_PRCM_BASE + reset_offset, device_bit); + return 0; } |