[U-Boot] [U-Boot, v2, 1/2] drivers/reset: support rockchip reset drivers

[Philipp Tomsich]

> From: Elaine Zhang <zhangqing at 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 at rock-chips.com>
> Signed-off-by: Kever Yang <kever.yang at rock-chips.com>
> Acked-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> ---
> 
> 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 at theobroma-systems.com>