From: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
To: intel-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Subject: [PATCH v2 12/21] drm/i915/mtl: Fix rawclk for Meteorlake PCH
Date: Thu, 18 Aug 2022 16:41:53 -0700 [thread overview]
Message-ID: <20220818234202.451742-13-radhakrishna.sripada@intel.com> (raw)
In-Reply-To: <20220818234202.451742-1-radhakrishna.sripada@intel.com>
From: Clint Taylor <clinton.a.taylor@intel.com>
MTL has a fixed rawclk of 38400Khz. Register does not need to be
reprogrammed.
Bspec: 49304
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Clint Taylor <clinton.a.taylor@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
---
drivers/gpu/drm/i915/display/intel_cdclk.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c
index 86a22c3766e5..1ee61abd40bc 100644
--- a/drivers/gpu/drm/i915/display/intel_cdclk.c
+++ b/drivers/gpu/drm/i915/display/intel_cdclk.c
@@ -3036,6 +3036,13 @@ u32 intel_read_rawclk(struct drm_i915_private *dev_priv)
if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG1)
freq = dg1_rawclk(dev_priv);
+ else if (INTEL_PCH_TYPE(dev_priv) >= PCH_MTP)
+ /*
+ * MTL always uses a 38.4 MHz rawclk. The bspec tells us
+ * "RAWCLK_FREQ defaults to the values for 38.4 and does
+ * not need to be programmed."
+ */
+ freq = 38400;
else if (INTEL_PCH_TYPE(dev_priv) >= PCH_CNP)
freq = cnp_rawclk(dev_priv);
else if (HAS_PCH_SPLIT(dev_priv))
--
2.25.1
next prev parent reply other threads:[~2022-08-18 23:43 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-18 23:41 [PATCH v2 00/21] Initial Meteorlake Support Radhakrishna Sripada
2022-08-18 23:41 ` [PATCH v2 01/21] drm/i915: Read graphics/media/display arch version from hw Radhakrishna Sripada
2022-08-19 19:04 ` [Intel-gfx] " Matt Roper
2022-08-24 10:10 ` Jani Nikula
2022-08-18 23:41 ` [PATCH v2 02/21] drm/i915: Parse and set stepping for platforms with GMD Radhakrishna Sripada
2022-08-24 8:11 ` [Intel-gfx] " Balasubramani Vivekanandan
2022-08-18 23:41 ` [PATCH v2 03/21] drm/i915/mtl: MMIO range is now 4MB Radhakrishna Sripada
2022-08-24 13:25 ` Balasubramani Vivekanandan
2022-08-18 23:41 ` [PATCH v2 04/21] drm/i915/mtl: Don't mask off CCS according to DSS fusing Radhakrishna Sripada
2022-08-24 14:54 ` Balasubramani Vivekanandan
2022-08-18 23:41 ` [PATCH v2 05/21] drm/i915/mtl: Define engine context layouts Radhakrishna Sripada
2022-08-25 10:33 ` Balasubramani Vivekanandan
2022-08-18 23:41 ` [PATCH v2 06/21] drm/i915/mtl: Add PCH support Radhakrishna Sripada
2022-08-18 23:41 ` [PATCH v2 07/21] drm/i915/mtl: Add gmbus and gpio support Radhakrishna Sripada
2022-08-19 19:17 ` Matt Roper
2022-08-18 23:41 ` [PATCH v2 08/21] drm/i915/mtl: Add VBT port and AUX_CH mapping Radhakrishna Sripada
2022-08-18 23:41 ` [PATCH v2 09/21] drm/i915/mtl: Add support for MTL in Display Init sequences Radhakrishna Sripada
2022-08-18 23:41 ` [PATCH v2 10/21] drm/i915/mtl: Add display power wells Radhakrishna Sripada
2022-08-18 23:41 ` [PATCH v2 11/21] drm/i915/mtl: Add DP AUX support on TypeC ports Radhakrishna Sripada
2022-08-18 23:41 ` Radhakrishna Sripada [this message]
2022-08-18 23:41 ` [PATCH v2 13/21] drm/i915: Extract wm latency adjustment to its own function Radhakrishna Sripada
2022-08-19 19:26 ` Matt Roper
2022-08-18 23:41 ` [PATCH v2 14/21] drm/i915/mtl: memory latency data from LATENCY_LPX_LPY for WM Radhakrishna Sripada
2022-08-19 19:31 ` Matt Roper
2022-08-18 23:41 ` [PATCH v2 15/21] drm/i915/mtl: Obtain SAGV values from MMIO instead of GT pcode mailbox Radhakrishna Sripada
2022-08-27 0:03 ` Matt Roper
2022-08-18 23:41 ` [PATCH v2 16/21] drm/i915/mtl: Update memory bandwidth parameters Radhakrishna Sripada
2022-08-18 23:41 ` [PATCH v2 17/21] drm/i915/mtl: Update MBUS_DBOX credits Radhakrishna Sripada
2022-08-18 23:41 ` [PATCH v2 18/21] drm/i915/mtl: Reuse adl-p DBUF calculations Radhakrishna Sripada
2022-08-18 23:42 ` [PATCH v2 19/21] drm/i915/display/mtl: Extend MBUS programming Radhakrishna Sripada
2022-08-18 23:42 ` [PATCH v2 20/21] drm/i915/mtl: Update CHICKEN_TRANS* register addresses Radhakrishna Sripada
2022-08-18 23:42 ` [PATCH v2 21/21] drm/i915/mtl: Do not update GV point, mask value Radhakrishna Sripada
2022-08-19 19:46 ` [Intel-gfx] " Matt Roper
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