From: Bjorn Andersson <bjorn.andersson@linaro.org> To: Kishon Vijay Abraham I <kishon@ti.com>, Vinod Koul <vkoul@kernel.org> Cc: Rob Herring <robh+dt@kernel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 3/5] phy: qcom: edp: Perform lane configuration Date: Tue, 9 Aug 2022 21:07:43 -0700 [thread overview] Message-ID: <20220810040745.3582985-4-bjorn.andersson@linaro.org> (raw) In-Reply-To: <20220810040745.3582985-1-bjorn.andersson@linaro.org> The TRANSCIEVER_BIAS_EN, HIGHZ_DRVR_EN and PHY_CFG_1 registers are used for lane configuration, with the currently hard coded configuration being a mix of 2 and 4 lane (effectively 2-lane). Properly implement lane configuration for 1, 2 and 4 lanes. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> --- drivers/phy/qualcomm/phy-qcom-edp.c | 32 ++++++++++++++++++++++++----- 1 file changed, 27 insertions(+), 5 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-edp.c b/drivers/phy/qualcomm/phy-qcom-edp.c index 41aa28291cea..32614fb838b5 100644 --- a/drivers/phy/qualcomm/phy-qcom-edp.c +++ b/drivers/phy/qualcomm/phy-qcom-edp.c @@ -315,9 +315,11 @@ static int qcom_edp_set_vco_div(const struct qcom_edp *edp) static int qcom_edp_phy_power_on(struct phy *phy) { const struct qcom_edp *edp = phy_get_drvdata(phy); + u32 bias0_en, drvr0_en, bias1_en, drvr1_en; int timeout; int ret; u32 val; + u8 cfg1; writel(DP_PHY_PD_CTL_PWRDN | DP_PHY_PD_CTL_AUX_PWRDN | DP_PHY_PD_CTL_LANE_0_1_PWRDN | DP_PHY_PD_CTL_LANE_2_3_PWRDN | @@ -398,11 +400,31 @@ static int qcom_edp_phy_power_on(struct phy *phy) writel(0x1f, edp->tx0 + TXn_TX_DRV_LVL); writel(0x1f, edp->tx1 + TXn_TX_DRV_LVL); - writel(0x4, edp->tx0 + TXn_HIGHZ_DRVR_EN); - writel(0x3, edp->tx0 + TXn_TRANSCEIVER_BIAS_EN); - writel(0x4, edp->tx1 + TXn_HIGHZ_DRVR_EN); - writel(0x0, edp->tx1 + TXn_TRANSCEIVER_BIAS_EN); - writel(0x3, edp->edp + DP_PHY_CFG_1); + if (edp->dp_opts.lanes == 1) { + bias0_en = 0x01; + bias1_en = 0x00; + drvr0_en = 0x06; + drvr1_en = 0x07; + cfg1 = 0x1; + } else if (edp->dp_opts.lanes == 2) { + bias0_en = 0x03; + bias1_en = 0x00; + drvr0_en = 0x04; + drvr1_en = 0x07; + cfg1 = 0x3; + } else { + bias0_en = 0x03; + bias1_en = 0x03; + drvr0_en = 0x04; + drvr1_en = 0x04; + cfg1 = 0xf; + } + + writel(drvr0_en, edp->tx0 + TXn_HIGHZ_DRVR_EN); + writel(bias0_en, edp->tx0 + TXn_TRANSCEIVER_BIAS_EN); + writel(drvr1_en, edp->tx1 + TXn_HIGHZ_DRVR_EN); + writel(bias1_en, edp->tx1 + TXn_TRANSCEIVER_BIAS_EN); + writel(cfg1, edp->edp + DP_PHY_CFG_1); writel(0x18, edp->edp + DP_PHY_CFG); usleep_range(100, 1000); -- 2.35.1
WARNING: multiple messages have this Message-ID (diff)
From: Bjorn Andersson <bjorn.andersson@linaro.org> To: Kishon Vijay Abraham I <kishon@ti.com>, Vinod Koul <vkoul@kernel.org> Cc: Rob Herring <robh+dt@kernel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 3/5] phy: qcom: edp: Perform lane configuration Date: Tue, 9 Aug 2022 21:07:43 -0700 [thread overview] Message-ID: <20220810040745.3582985-4-bjorn.andersson@linaro.org> (raw) In-Reply-To: <20220810040745.3582985-1-bjorn.andersson@linaro.org> The TRANSCIEVER_BIAS_EN, HIGHZ_DRVR_EN and PHY_CFG_1 registers are used for lane configuration, with the currently hard coded configuration being a mix of 2 and 4 lane (effectively 2-lane). Properly implement lane configuration for 1, 2 and 4 lanes. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> --- drivers/phy/qualcomm/phy-qcom-edp.c | 32 ++++++++++++++++++++++++----- 1 file changed, 27 insertions(+), 5 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-edp.c b/drivers/phy/qualcomm/phy-qcom-edp.c index 41aa28291cea..32614fb838b5 100644 --- a/drivers/phy/qualcomm/phy-qcom-edp.c +++ b/drivers/phy/qualcomm/phy-qcom-edp.c @@ -315,9 +315,11 @@ static int qcom_edp_set_vco_div(const struct qcom_edp *edp) static int qcom_edp_phy_power_on(struct phy *phy) { const struct qcom_edp *edp = phy_get_drvdata(phy); + u32 bias0_en, drvr0_en, bias1_en, drvr1_en; int timeout; int ret; u32 val; + u8 cfg1; writel(DP_PHY_PD_CTL_PWRDN | DP_PHY_PD_CTL_AUX_PWRDN | DP_PHY_PD_CTL_LANE_0_1_PWRDN | DP_PHY_PD_CTL_LANE_2_3_PWRDN | @@ -398,11 +400,31 @@ static int qcom_edp_phy_power_on(struct phy *phy) writel(0x1f, edp->tx0 + TXn_TX_DRV_LVL); writel(0x1f, edp->tx1 + TXn_TX_DRV_LVL); - writel(0x4, edp->tx0 + TXn_HIGHZ_DRVR_EN); - writel(0x3, edp->tx0 + TXn_TRANSCEIVER_BIAS_EN); - writel(0x4, edp->tx1 + TXn_HIGHZ_DRVR_EN); - writel(0x0, edp->tx1 + TXn_TRANSCEIVER_BIAS_EN); - writel(0x3, edp->edp + DP_PHY_CFG_1); + if (edp->dp_opts.lanes == 1) { + bias0_en = 0x01; + bias1_en = 0x00; + drvr0_en = 0x06; + drvr1_en = 0x07; + cfg1 = 0x1; + } else if (edp->dp_opts.lanes == 2) { + bias0_en = 0x03; + bias1_en = 0x00; + drvr0_en = 0x04; + drvr1_en = 0x07; + cfg1 = 0x3; + } else { + bias0_en = 0x03; + bias1_en = 0x03; + drvr0_en = 0x04; + drvr1_en = 0x04; + cfg1 = 0xf; + } + + writel(drvr0_en, edp->tx0 + TXn_HIGHZ_DRVR_EN); + writel(bias0_en, edp->tx0 + TXn_TRANSCEIVER_BIAS_EN); + writel(drvr1_en, edp->tx1 + TXn_HIGHZ_DRVR_EN); + writel(bias1_en, edp->tx1 + TXn_TRANSCEIVER_BIAS_EN); + writel(cfg1, edp->edp + DP_PHY_CFG_1); writel(0x18, edp->edp + DP_PHY_CFG); usleep_range(100, 1000); -- 2.35.1 -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy
next prev parent reply other threads:[~2022-08-10 4:05 UTC|newest] Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-08-10 4:07 [PATCH 0/5] phy: qcom: edp: Introduce SC8280XP support Bjorn Andersson 2022-08-10 4:07 ` Bjorn Andersson 2022-08-10 4:07 ` [PATCH 1/5] dt-bindings: phy: qcom-edp: Add SC8280XP PHY compatibles Bjorn Andersson 2022-08-10 4:07 ` Bjorn Andersson 2022-08-10 14:48 ` Krzysztof Kozlowski 2022-08-10 14:48 ` Krzysztof Kozlowski 2022-08-10 4:07 ` [PATCH 2/5] phy: qcom: edp: Generate unique clock names Bjorn Andersson 2022-08-10 4:07 ` Bjorn Andersson 2022-08-10 4:07 ` Bjorn Andersson [this message] 2022-08-10 4:07 ` [PATCH 3/5] phy: qcom: edp: Perform lane configuration Bjorn Andersson 2022-08-10 4:07 ` [PATCH 4/5] phy: qcom: edp: Introduce support for DisplayPort Bjorn Andersson 2022-08-10 4:07 ` Bjorn Andersson 2023-10-02 9:06 ` Johan Hovold 2023-10-02 9:06 ` Johan Hovold 2023-10-02 9:51 ` Konrad Dybcio 2023-10-02 9:51 ` Konrad Dybcio 2022-08-10 4:07 ` [PATCH 5/5] phy: qcom: edp: Add SC8280XP eDP and DP PHYs Bjorn Andersson 2022-08-10 4:07 ` Bjorn Andersson 2022-08-30 5:31 ` [PATCH 0/5] phy: qcom: edp: Introduce SC8280XP support Vinod Koul 2022-08-30 5:31 ` Vinod Koul
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