rockchip: Add a way to obtain the main clock device
On Rockchip SoCs we typically have a main clock device that uses the Soc
clock driver. There is also a fixed clock for the oscillator. Add a function
to obtain the core clock.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/include/asm/arch-rockchip/clock.h b/arch/arm/include/asm/arch-rockchip/clock.h
index 4bebd62..21edbc2 100644
--- a/arch/arm/include/asm/arch-rockchip/clock.h
+++ b/arch/arm/include/asm/arch-rockchip/clock.h
@@ -67,4 +67,6 @@
void rk3288_clk_configure_cpu(struct rk3288_cru *cru, struct rk3288_grf *grf);
+int rockchip_get_clk(struct udevice **devp);
+
#endif
diff --git a/arch/arm/mach-rockchip/rk3288/Makefile b/arch/arm/mach-rockchip/rk3288/Makefile
index 6f62375..82b00a1 100644
--- a/arch/arm/mach-rockchip/rk3288/Makefile
+++ b/arch/arm/mach-rockchip/rk3288/Makefile
@@ -4,6 +4,7 @@
# SPDX-License-Identifier: GPL-2.0+
#
+obj-y += clk_rk3288.o
obj-y += reset_rk3288.o
obj-y += sdram_rk3288.o
obj-y += syscon_rk3288.o
diff --git a/arch/arm/mach-rockchip/rk3288/clk_rk3288.c b/arch/arm/mach-rockchip/rk3288/clk_rk3288.c
new file mode 100644
index 0000000..2099e34
--- /dev/null
+++ b/arch/arm/mach-rockchip/rk3288/clk_rk3288.c
@@ -0,0 +1,17 @@
+/*
+ * Copyright (C) 2015 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <syscon.h>
+#include <asm/arch/clock.h>
+
+int rockchip_get_clk(struct udevice **devp)
+{
+ return uclass_get_device_by_driver(UCLASS_CLK,
+ DM_GET_DRIVER(rockchip_rk3288_cru), devp);
+}