rockchip: clk: rk3368: add support for GMAC (SLCK_MAC) clock
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@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/include/asm/arch-rockchip/cru_rk3368.h b/arch/arm/include/asm/arch-rockchip/cru_rk3368.h
index 21f11e0..2b1197f 100644
--- a/arch/arm/include/asm/arch-rockchip/cru_rk3368.h
+++ b/arch/arm/include/asm/arch-rockchip/cru_rk3368.h
@@ -89,6 +89,9 @@
MCU_CLK_DIV_SHIFT = 0,
MCU_CLK_DIV_MASK = GENMASK(4, 0),
+ /* CLKSEL43_CON */
+ GMAC_MUX_SEL_EXTCLK = BIT(8),
+
/* CLKSEL51_CON */
MMC_PLL_SEL_SHIFT = 8,
MMC_PLL_SEL_MASK = GENMASK(9, 8),