[U-Boot] [U-Boot, v4, 45/66] rockchip: clk: rk3368: add support for GMAC (SLCK_MAC) clock

[Philipp Tomsich]

> To enable the GMAC on the RK3368, we need to set up the clocking
> appropriately to generate a tx_clk for the MAC.
> 
> This adds an implementation that implements the use of the <&ext_gmac>
> clock (i.e. an external 125MHz clock for RGMII provided by the PHY).
> This is the clock setup used by the boards currently supported by
> U-Boot (i.e. Geekbox, Sheep and RK3368-uQ7).
> 
> This includes the change from commit
>  - rockchip: clk: rk3368: define GMAC_MUX_SEL_EXTCLK
> 
> Signed-off-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> 
> Reviewed-by: Simon Glass <sjg at chromium.org>
> ---
> 
> Changes in v4: None
> Changes in v3: None
> Changes in v2: None
> 
>  arch/arm/include/asm/arch-rockchip/cru_rk3368.h |  3 +++
>  drivers/clk/rockchip/clk_rk3368.c               | 19 +++++++++++++++++--
>  2 files changed, 20 insertions(+), 2 deletions(-)
> 

Applied to u-boot-rockchip, thanks!