[PATCH v2 02/40] drm/i915/tgl: add support for reading the timestamp frequency

Lucas De Marchi
2019-08-17T09:39:21Z

From: Michel Thierry <michel.thierry@intel.com>

There are no changes with respect to GEN11, which Paulo wrote.

This gets rid of the "Missing switch case in read_timestamp_frequency"
message at boot for Tiger Lake.

[ Lucas: BSpec: 10742 and 9024, but there's a mismatch on the values.
Let's say a glitch in the spec. Tested locally and it works. ]

Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
---
drivers/gpu/drm/i915/intel_device_info.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index f99c9fd497b2..a3017d16b7f3 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -716,7 +716,7 @@ static u32 read_timestamp_frequency(struct drm_i915_private *dev_priv)
}

return freq;
- } else if (INTEL_GEN(dev_priv) <= 11) {
+ } else if (INTEL_GEN(dev_priv) <= 12) {
u32 ctc_reg = I915_READ(CTC_MODE);
u32 freq = 0;

--
2.21.0