From: Elaine Zhang zhangqing@rock-chips.com
Create driver to support all Rockchip SoCs soft reset. Example of usage: i2c driver: ret = reset_get_by_name(dev, "i2c", &reset_ctl); if (ret) { error("reset_get_by_name() failed: %d\n", ret); }
reset_assert(&reset_ctl); udelay(50); reset_deassert(&reset_ctl);
i2c dts node: resets = <&cru SRST_P_I2C1>, <&cru SRST_I2C1>; reset-names = "p_i2c", "i2c";
Signed-off-by: Elaine Zhang zhangqing@rock-chips.com Signed-off-by: Kever Yang kever.yang@rock-chips.com Acked-by: Philipp Tomsich philipp.tomsich@theobroma-systems.com
Changes in v5:
- make rockchip reset driver depends on ARCH_ROCKCHIP
Changes in v4: None Changes in v3: None Changes in v2:
- fix Kconfig more than 80 length
- use MACRO for reset bits in one reg
- use rkclr/set_reg for reg access
- add rockchip_reset_bind()
- use dev_read_addr_size() instead of fdtdec_
drivers/reset/Kconfig | 9 +++ drivers/reset/Makefile | 1 + drivers/reset/reset-rockchip.c | 133 +++++++++++++++++++++++++++++++++++++++++ 3 files changed, 143 insertions(+) create mode 100644 drivers/reset/reset-rockchip.c
Reviewed-by: Philipp Tomsich philipp.tomsich@theobroma-systems.com