iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/i915/icp: Add Wa_14010685332

Browse Source 
We need to toggle a SDE chicken bit on and then off as the final
step when disabling interrupts in preparation for runtime suspend.

Bspec: 33450
Bspec: 8402
Cc: Bob Paauwe <bob.j.paauwe@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200501213701.371443-1-matthew.d.roper@intel.com
Reviewed-by: Bob Paauwe <bob.j.paauwe@intel.com>
This commit is contained in:
Matt Roper 2020-05-01 14:37:01 -07:00
parent 977253df64
commit 9b2383a7ac
2 changed files with 9 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/gpu/drm/i915/i915_irq.c
View File

@ -2870,6 +2870,14 @@ static void gen11_display_irq_reset(struct drm_i915_private *dev_priv)
if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
GEN3_IRQ_RESET(uncore, SDE);
/* Wa_14010685332:icl */
if (INTEL_PCH_TYPE(dev_priv) == PCH_ICP) {
intel_uncore_rmw(uncore, SOUTH_CHICKEN1,
SBCLK_RUN_REFCLK_DIS, SBCLK_RUN_REFCLK_DIS);
intel_uncore_rmw(uncore, SOUTH_CHICKEN1,
SBCLK_RUN_REFCLK_DIS, 0);
}
}
static void gen11_irq_reset(struct drm_i915_private *dev_priv)

1
drivers/gpu/drm/i915/i915_reg.h
View File

@ -8573,6 +8573,7 @@ enum {
#define FDI_BC_BIFURCATION_SELECT (1 << 12)
#define CHASSIS_CLK_REQ_DURATION_MASK (0xf << 8)
#define CHASSIS_CLK_REQ_DURATION(x) ((x) << 8)
#define SBCLK_RUN_REFCLK_DIS (1 << 7)
#define SPT_PWM_GRANULARITY (1 << 0)
#define SOUTH_CHICKEN2 _MMIO(0xc2004)
#define FDI_MPHY_IOSFSB_RESET_STATUS (1 << 13)