drm/radeon: add a asic callback to get the xclk
This is required to get the reference clock used
by the gfx engine for things like timestamps. Fixes
support for GL extensions the use timestamps on
certain boards.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/rv770d.h b/drivers/gpu/drm/radeon/rv770d.h
index 20e29d2..c55f950 100644
--- a/drivers/gpu/drm/radeon/rv770d.h
+++ b/drivers/gpu/drm/radeon/rv770d.h
@@ -128,6 +128,10 @@
#define GUI_ACTIVE (1<<31)
#define GRBM_STATUS2 0x8014
+#define CG_CLKPIN_CNTL 0x660
+# define MUX_TCLK_TO_XCLK (1 << 8)
+# define XTALIN_DIVIDE (1 << 9)
+
#define CG_MULT_THERMAL_STATUS 0x740
#define ASIC_T(x) ((x) << 16)
#define ASIC_T_MASK 0x3FF0000