From: Matt Roper <matthew.d.roper@intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH v2 46/50] drm/i915/dg2: Wait for SNPS PHY calibration during display init
Date: Tue, 13 Jul 2021 20:15:36 -0700 [thread overview]
Message-ID: <20210714031540.3539704-47-matthew.d.roper@intel.com> (raw)
In-Reply-To: <20210714031540.3539704-1-matthew.d.roper@intel.com>
Initialization of the PHY is handled by the hardware/firmware, but the
driver should wait up to 25ms for the PHY to report that its calibration
has completed.
Bspec: 49189
Bspec: 50107
Cc: Matt Atwood <matthew.s.atwood@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
---
.../gpu/drm/i915/display/intel_display_power.c | 5 +++++
drivers/gpu/drm/i915/display/intel_snps_phy.c | 15 +++++++++++++++
drivers/gpu/drm/i915/display/intel_snps_phy.h | 3 +++
drivers/gpu/drm/i915/i915_reg.h | 1 +
4 files changed, 24 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
index 9593c517a321..2fb178a27327 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power.c
+++ b/drivers/gpu/drm/i915/display/intel_display_power.c
@@ -18,6 +18,7 @@
#include "intel_pm.h"
#include "intel_pps.h"
#include "intel_sideband.h"
+#include "intel_snps_phy.h"
#include "intel_tc.h"
#include "intel_vga.h"
@@ -5900,6 +5901,10 @@ static void icl_display_core_init(struct drm_i915_private *dev_priv,
if (DISPLAY_VER(dev_priv) >= 12)
tgl_bw_buddy_init(dev_priv);
+ /* 8. Ensure PHYs have completed calibration and adaptation */
+ if (IS_DG2(dev_priv))
+ intel_snps_phy_wait_for_calibration(dev_priv);
+
if (resume && intel_dmc_has_payload(dev_priv))
intel_dmc_load_program(dev_priv);
diff --git a/drivers/gpu/drm/i915/display/intel_snps_phy.c b/drivers/gpu/drm/i915/display/intel_snps_phy.c
index 77759bda98a4..f0c30d3d2dfb 100644
--- a/drivers/gpu/drm/i915/display/intel_snps_phy.c
+++ b/drivers/gpu/drm/i915/display/intel_snps_phy.c
@@ -21,6 +21,21 @@
* since it is not handled by the shared DPLL framework as on other platforms.
*/
+void intel_snps_phy_wait_for_calibration(struct drm_i915_private *dev_priv)
+{
+ enum phy phy;
+
+ for_each_phy_masked(phy, ~0) {
+ if (!intel_phy_is_snps(dev_priv, phy))
+ continue;
+
+ if (intel_de_wait_for_clear(dev_priv, ICL_PHY_MISC(phy),
+ DG2_PHY_DP_TX_ACK_MASK, 25))
+ DRM_ERROR("SNPS PHY %c failed to calibrate after 25ms.\n",
+ phy);
+ }
+}
+
static const u32 dg2_ddi_translations[] = {
/* VS 0, pre-emph 0 */
REG_FIELD_PREP(SNPS_PHY_TX_EQ_MAIN, 26),
diff --git a/drivers/gpu/drm/i915/display/intel_snps_phy.h b/drivers/gpu/drm/i915/display/intel_snps_phy.h
index 3ce92d424f66..6aa33ff729ec 100644
--- a/drivers/gpu/drm/i915/display/intel_snps_phy.h
+++ b/drivers/gpu/drm/i915/display/intel_snps_phy.h
@@ -8,10 +8,13 @@
#include <linux/types.h>
+struct drm_i915_private;
struct intel_encoder;
struct intel_crtc_state;
struct intel_mpllb_state;
+void intel_snps_phy_wait_for_calibration(struct drm_i915_private *dev_priv);
+
int intel_mpllb_calc_state(struct intel_crtc_state *crtc_state,
struct intel_encoder *encoder);
void intel_mpllb_enable(struct intel_encoder *encoder,
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index c44031dcdcb4..9c7dc812317e 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -12454,6 +12454,7 @@ enum skl_power_gate {
_ICL_PHY_MISC_B)
#define ICL_PHY_MISC_MUX_DDID (1 << 28)
#define ICL_PHY_MISC_DE_IO_COMP_PWR_DOWN (1 << 23)
+#define DG2_PHY_DP_TX_ACK_MASK REG_GENMASK(23, 20)
/* Icelake Display Stream Compression Registers */
#define DSCA_PICTURE_PARAMETER_SET_0 _MMIO(0x6B200)
--
2.25.4
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next prev parent reply other threads:[~2021-07-14 3:16 UTC|newest]
Thread overview: 88+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-14 3:14 [Intel-gfx] [PATCH v2 00/50] Begin enabling Xe_HP SDV and DG2 platforms Matt Roper
2021-07-14 3:14 ` [Intel-gfx] [PATCH v2 01/50] drm/i915: Add XE_HP initial definitions Matt Roper
2021-07-19 18:05 ` Souza, Jose
2021-07-14 3:14 ` [Intel-gfx] [PATCH v2 02/50] drm/i915: Fork DG1 interrupt handler Matt Roper
2021-07-19 21:18 ` Matt Atwood
2021-07-14 3:14 ` [Intel-gfx] [PATCH v2 03/50] drm/i915/xehp: VDBOX/VEBOX fusing registers are enable-based Matt Roper
2021-07-19 21:20 ` Matt Atwood
2021-07-14 3:14 ` [Intel-gfx] [PATCH v2 04/50] drm/i915/gen12: Use fuse info to enable SFC Matt Roper
2021-07-14 3:14 ` [Intel-gfx] [PATCH v2 05/50] drm/i915/selftests: Allow for larger engine counts Matt Roper
2021-07-14 3:14 ` [Intel-gfx] [PATCH v2 06/50] drm/i915/xehp: Extra media engines - Part 1 (engine definitions) Matt Roper
2021-07-20 23:03 ` Lucas De Marchi
2021-07-20 23:40 ` John Harrison
2021-07-20 23:49 ` Lucas De Marchi
2021-07-21 18:23 ` Lucas De Marchi
2021-07-14 3:14 ` [Intel-gfx] [PATCH v2 07/50] drm/i915/xehp: Extra media engines - Part 2 (interrupts) Matt Roper
2021-07-14 3:14 ` [Intel-gfx] [PATCH v2 08/50] drm/i915/xehp: Extra media engines - Part 3 (reset) Matt Roper
2021-07-19 18:13 ` Souza, Jose
2021-07-20 20:39 ` Matt Atwood
2021-07-14 3:14 ` [Intel-gfx] [PATCH v2 09/50] drm/i915/xehp: Xe_HP forcewake support Matt Roper
2021-07-20 20:57 ` Matt Atwood
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 10/50] drm/i915/xehp: Define multicast register ranges Matt Roper
2021-07-19 18:19 ` Souza, Jose
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 11/50] drm/i915/xehp: Handle new device context ID format Matt Roper
2021-07-20 21:39 ` Matt Atwood
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 12/50] drm/i915/xehp: New engine context offsets Matt Roper
2021-07-20 22:06 ` Matt Atwood
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 13/50] drm/i915/xehp: handle new steering options Matt Roper
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 14/50] drm/i915/xehp: Loop over all gslices for INSTDONE processing Matt Roper
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 15/50] drm/i915/xehpsdv: add initial XeHP SDV definitions Matt Roper
2021-07-19 18:20 ` Souza, Jose
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 16/50] drm/i915/xehp: Changes to ss/eu definitions Matt Roper
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 17/50] drm/i915/xehpsdv: Add maximum sseu limits Matt Roper
2021-07-18 13:10 ` Yokoyama, Caz
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 18/50] drm/i915/xehpsdv: Add compute DSS type Matt Roper
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 19/50] drm/i915/xehpsdv: Define steering tables Matt Roper
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 20/50] drm/i915/xehpsdv: Define MOCS table for XeHP SDV Matt Roper
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 21/50] drm/i915/xehpsdv: factor out function to read RP_STATE_CAP Matt Roper
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 22/50] drm/i915/xehpsdv: Read correct RP_STATE_CAP register Matt Roper
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 23/50] drm/i915/dg2: add DG2 platform info Matt Roper
2021-07-19 18:21 ` Souza, Jose
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 24/50] drm/i915/dg2: DG2 uses the same sseu limits as XeHP SDV Matt Roper
2021-07-16 16:06 ` Yokoyama, Caz
2021-07-19 18:22 ` Souza, Jose
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 25/50] drm/i915/dg2: Add forcewake table Matt Roper
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 26/50] drm/i915/dg2: Update LNCF steering ranges Matt Roper
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 27/50] drm/i915/dg2: Add SQIDI steering Matt Roper
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 28/50] drm/i915/dg2: Add new LRI reg offsets Matt Roper
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 29/50] drm/i915/dg2: Maintain backward-compatible nested batch behavior Matt Roper
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 30/50] drm/i915/dg2: Report INSTDONE_GEOM values in error state Matt Roper
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 31/50] drm/i915/dg2: Define MOCS table for DG2 Matt Roper
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 32/50] drm/i915/dg2: Add fake PCH Matt Roper
2021-07-16 19:52 ` Souza, Jose
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 33/50] drm/i915/dg2: Add cdclk table and reference clock Matt Roper
2021-07-16 19:36 ` Souza, Jose
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 34/50] drm/i915/dg2: Skip shared DPLL handling Matt Roper
2021-07-16 19:38 ` Souza, Jose
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 35/50] drm/i915/dg2: Don't wait for AUX power well enable ACKs Matt Roper
2021-07-16 19:40 ` Souza, Jose
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 36/50] drm/i915/dg2: Setup display outputs Matt Roper
2021-07-16 19:40 ` Souza, Jose
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 37/50] drm/i915/dg2: Add dbuf programming Matt Roper
2021-07-16 19:45 ` Souza, Jose
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 38/50] drm/i915/dg2: Don't program BW_BUDDY registers Matt Roper
2021-07-16 19:47 ` Souza, Jose
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 39/50] drm/i915/dg2: Don't read DRAM info Matt Roper
2021-07-15 17:17 ` Srivatsa, Anusha
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 40/50] drm/i915/dg2: DG2 has fixed memory bandwidth Matt Roper
2021-07-21 17:42 ` Srivatsa, Anusha
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 41/50] drm/i915/dg2: Add MPLLB programming for SNPS PHY Matt Roper
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 42/50] drm/i915/dg2: Add MPLLB programming for HDMI Matt Roper
2021-07-16 21:13 ` Matt Atwood
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 43/50] drm/i915/dg2: Add vswing programming for SNPS phys Matt Roper
2021-07-16 21:38 ` Matt Atwood
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 44/50] drm/i915/dg2: Update modeset sequences Matt Roper
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 45/50] drm/i915/dg2: Classify DG2 PHY types Matt Roper
2021-07-16 20:50 ` Matt Atwood
2021-07-14 3:15 ` Matt Roper [this message]
2021-07-16 20:52 ` [Intel-gfx] [PATCH v2 46/50] drm/i915/dg2: Wait for SNPS PHY calibration during display init Matt Atwood
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 47/50] drm/i915/dg2: Update lane disable power state during PSR Matt Roper
2021-07-21 17:55 ` Srivatsa, Anusha
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 48/50] drm/i915/dg2: Add DG2 to the PSR2 defeature list Matt Roper
2021-07-21 17:56 ` Srivatsa, Anusha
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 49/50] drm/i915/dg2: Update to bigjoiner path Matt Roper
2021-07-14 3:15 ` [Intel-gfx] [PATCH v2 50/50] drm/i915/dg2: Configure PCON in DP pre-enable path Matt Roper
2021-07-14 4:23 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for Begin enabling Xe_HP SDV and DG2 platforms (rev5) Patchwork
2021-07-14 4:24 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2021-07-14 4:51 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2021-07-14 15:12 ` [Intel-gfx] ✓ Fi.CI.IGT: " Patchwork
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