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12 May 2021 16:07:29 -0700 Received: from fmsmsx611.amr.corp.intel.com (10.18.126.91) by fmsmsx604.amr.corp.intel.com (10.18.126.84) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2106.2; Wed, 12 May 2021 16:07:28 -0700 Received: from fmsmsx611.amr.corp.intel.com (10.18.126.91) by fmsmsx611.amr.corp.intel.com (10.18.126.91) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2106.2; Wed, 12 May 2021 16:07:28 -0700 Received: from fmsmsx611.amr.corp.intel.com ([10.18.126.91]) by fmsmsx611.amr.corp.intel.com ([10.18.126.91]) with mapi id 15.01.2106.013; Wed, 12 May 2021 16:07:28 -0700 From: "Srivatsa, Anusha" To: "Roper, Matthew D" , "intel-gfx@lists.freedesktop.org" Thread-Topic: [Intel-gfx] [PATCH v3 36/48] drm/i915/adl_p: Enable/disable loadgen sharing Thread-Index: AQHXQ7Hx8YoXPKPQuUm+NhF3s39c8argf6WA Date: Wed, 12 May 2021 23:07:28 +0000 Message-ID: References: <20210508022820.780227-1-matthew.d.roper@intel.com> <20210508022820.780227-37-matthew.d.roper@intel.com> In-Reply-To: <20210508022820.780227-37-matthew.d.roper@intel.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-version: 11.5.1.3 dlp-product: dlpe-windows dlp-reaction: no-action x-originating-ip: [10.22.254.132] MIME-Version: 1.0 Subject: Re: [Intel-gfx] [PATCH v3 36/48] drm/i915/adl_p: Enable/disable loadgen sharing X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" > -----Original Message----- > From: Intel-gfx On Behalf Of Matt > Roper > Sent: Friday, May 7, 2021 7:28 PM > To: intel-gfx@lists.freedesktop.org > Subject: [Intel-gfx] [PATCH v3 36/48] drm/i915/adl_p: Enable/disable loadgen > sharing > > From: Mika Kahola > > Disable loadgen sharing for DP link rate 1.62 GHz and HDMI 5.94 GHz. > For all other modes, we can enable loadgen sharing feature. > > BSpec: 55359 > > Cc: Imre Deak > Signed-off-by: Mika Kahola > Signed-off-by: Clinton Taylor > Signed-off-by: Matt Roper Reviewed-by: Anusha Srivatsa > --- > drivers/gpu/drm/i915/display/intel_ddi.c | 8 ++++++++ > drivers/gpu/drm/i915/i915_reg.h | 1 + > 2 files changed, 9 insertions(+) > > diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c > b/drivers/gpu/drm/i915/display/intel_ddi.c > index bbfa5bcd4c63..6889be6b9e81 100644 > --- a/drivers/gpu/drm/i915/display/intel_ddi.c > +++ b/drivers/gpu/drm/i915/display/intel_ddi.c > @@ -1470,6 +1470,14 @@ tgl_dkl_phy_ddi_vswing_sequence(struct > intel_encoder *encoder, > val = intel_de_read(dev_priv, DKL_TX_DPCNTL2(tc_port)); > val &= ~DKL_TX_DP20BITMODE; > intel_de_write(dev_priv, DKL_TX_DPCNTL2(tc_port), val); > + > + if ((intel_crtc_has_dp_encoder(crtc_state) && > + crtc_state->port_clock == 162000) || > + (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI) && > + crtc_state->port_clock == 594000)) > + val |= DKL_TX_LOADGEN_SHARING_PMD_DISABLE; > + else > + val &= ~DKL_TX_LOADGEN_SHARING_PMD_DISABLE; > } > } > > diff --git a/drivers/gpu/drm/i915/i915_reg.h > b/drivers/gpu/drm/i915/i915_reg.h index 9a52711e3920..3afbea20bdd3 > 100644 > --- a/drivers/gpu/drm/i915/i915_reg.h > +++ b/drivers/gpu/drm/i915/i915_reg.h > @@ -10893,6 +10893,7 @@ enum skl_power_gate { > _DKL_TX_DPCNTL1) > > #define _DKL_TX_DPCNTL2 0x2C8 > +#define DKL_TX_LOADGEN_SHARING_PMD_DISABLE REG_BIT(12) > #define DKL_TX_DP20BITMODE (1 << 2) > #define DKL_TX_DPCNTL2(tc_port) _MMIO(_PORT(tc_port, \ > _DKL_PHY1_BASE, \ > -- > 2.25.4 > > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/intel-gfx _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx