From: Johan Hovold <johan+linaro@kernel.org> To: Vinod Koul <vkoul@kernel.org> Cc: Andy Gross <agross@kernel.org>, Bjorn Andersson <andersson@kernel.org>, Konrad Dybcio <konrad.dybcio@somainline.org>, Kishon Vijay Abraham I <kishon@ti.com>, Dmitry Baryshkov <dmitry.baryshkov@linaro.org>, linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, linux-kernel@vger.kernel.org, Johan Hovold <johan+linaro@kernel.org> Subject: [PATCH 06/13] phy: qcom-qmp-pcie: drop bogus register update Date: Wed, 28 Sep 2022 17:28:15 +0200 [thread overview] Message-ID: <20220928152822.30687-7-johan+linaro@kernel.org> (raw) In-Reply-To: <20220928152822.30687-1-johan+linaro@kernel.org> Since commit 0d58280cf1e6 ("phy: Update PHY power control sequence") the PHY is powered on before configuring the registers and only the MSM8996 PCIe PHY, which includes the POWER_DOWN_CONTROL register in its PCS initialisation table, may possibly require a second update afterwards. To make things worse, the POWER_DOWN_CONTROL register lies at a different offset on more recent SoCs so that the second update, which still used a hard-coded offset, would write to an unrelated register (e.g. a revision-id register on SC8280XP). As the MSM8996 PCIe PHY is now handled by a separate driver, simply drop the bogus register update. Fixes: e4d8b05ad5f9 ("phy: qcom-qmp: Use proper PWRDOWN offset for sm8150 USB") added support Signed-off-by: Johan Hovold <johan+linaro@kernel.org> --- drivers/phy/qualcomm/phy-qcom-qmp-pcie.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c index 4146545fdf5f..eea66c24cf7e 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c @@ -1953,12 +1953,6 @@ static int qmp_pcie_power_on(struct phy *phy) qmp_pcie_configure(pcs_misc, cfg->regs, cfg->pcs_misc_tbl, cfg->pcs_misc_tbl_num); qmp_pcie_configure(pcs_misc, cfg->regs, cfg->pcs_misc_tbl_sec, cfg->pcs_misc_tbl_num_sec); - /* - * Pull out PHY from POWER DOWN state. - * This is active low enable signal to power-down PHY. - */ - qphy_setbits(pcs, QPHY_V2_PCS_POWER_DOWN_CONTROL, cfg->pwrdn_ctrl); - if (cfg->has_pwrdn_delay) usleep_range(cfg->pwrdn_delay_min, cfg->pwrdn_delay_max); -- 2.35.1
WARNING: multiple messages have this Message-ID (diff)
From: Johan Hovold <johan+linaro@kernel.org> To: Vinod Koul <vkoul@kernel.org> Cc: Andy Gross <agross@kernel.org>, Bjorn Andersson <andersson@kernel.org>, Konrad Dybcio <konrad.dybcio@somainline.org>, Kishon Vijay Abraham I <kishon@ti.com>, Dmitry Baryshkov <dmitry.baryshkov@linaro.org>, linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, linux-kernel@vger.kernel.org, Johan Hovold <johan+linaro@kernel.org> Subject: [PATCH 06/13] phy: qcom-qmp-pcie: drop bogus register update Date: Wed, 28 Sep 2022 17:28:15 +0200 [thread overview] Message-ID: <20220928152822.30687-7-johan+linaro@kernel.org> (raw) In-Reply-To: <20220928152822.30687-1-johan+linaro@kernel.org> Since commit 0d58280cf1e6 ("phy: Update PHY power control sequence") the PHY is powered on before configuring the registers and only the MSM8996 PCIe PHY, which includes the POWER_DOWN_CONTROL register in its PCS initialisation table, may possibly require a second update afterwards. To make things worse, the POWER_DOWN_CONTROL register lies at a different offset on more recent SoCs so that the second update, which still used a hard-coded offset, would write to an unrelated register (e.g. a revision-id register on SC8280XP). As the MSM8996 PCIe PHY is now handled by a separate driver, simply drop the bogus register update. Fixes: e4d8b05ad5f9 ("phy: qcom-qmp: Use proper PWRDOWN offset for sm8150 USB") added support Signed-off-by: Johan Hovold <johan+linaro@kernel.org> --- drivers/phy/qualcomm/phy-qcom-qmp-pcie.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c index 4146545fdf5f..eea66c24cf7e 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c @@ -1953,12 +1953,6 @@ static int qmp_pcie_power_on(struct phy *phy) qmp_pcie_configure(pcs_misc, cfg->regs, cfg->pcs_misc_tbl, cfg->pcs_misc_tbl_num); qmp_pcie_configure(pcs_misc, cfg->regs, cfg->pcs_misc_tbl_sec, cfg->pcs_misc_tbl_num_sec); - /* - * Pull out PHY from POWER DOWN state. - * This is active low enable signal to power-down PHY. - */ - qphy_setbits(pcs, QPHY_V2_PCS_POWER_DOWN_CONTROL, cfg->pwrdn_ctrl); - if (cfg->has_pwrdn_delay) usleep_range(cfg->pwrdn_delay_min, cfg->pwrdn_delay_max); -- 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:[~2022-09-28 15:28 UTC|newest] Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-09-28 15:28 [PATCH 00/13] phy: qcom-qmp: more fixes and cleanups Johan Hovold 2022-09-28 15:28 ` Johan Hovold 2022-09-28 15:28 ` [PATCH 01/13] phy: qcom-qmp: fix obsolete lane comments Johan Hovold 2022-09-28 15:28 ` Johan Hovold 2022-09-28 15:56 ` Neil Armstrong 2022-09-28 15:56 ` Neil Armstrong 2022-09-28 17:26 ` Dmitry Baryshkov 2022-09-28 17:26 ` Dmitry Baryshkov 2022-09-28 15:28 ` [PATCH 02/13] phy: qcom-qmp-combo: drop unused UFS reset Johan Hovold 2022-09-28 15:28 ` Johan Hovold 2022-09-28 16:04 ` Neil Armstrong 2022-09-28 16:04 ` Neil Armstrong 2022-09-28 17:25 ` Dmitry Baryshkov 2022-09-28 17:25 ` Dmitry Baryshkov 2022-09-28 15:28 ` [PATCH 03/13] phy: qcom-qmp-pcie: drop unused common-block registers Johan Hovold 2022-09-28 15:28 ` Johan Hovold 2022-09-28 16:03 ` Neil Armstrong 2022-09-28 16:03 ` Neil Armstrong 2022-09-28 17:23 ` Dmitry Baryshkov 2022-09-28 17:23 ` Dmitry Baryshkov 2022-09-28 15:28 ` [PATCH 04/13] phy: qcom-qmp-pcie: unify ipq registers Johan Hovold 2022-09-28 15:28 ` Johan Hovold 2022-09-28 15:57 ` Neil Armstrong 2022-09-28 15:57 ` Neil Armstrong 2022-09-28 17:34 ` Dmitry Baryshkov 2022-09-28 17:34 ` Dmitry Baryshkov 2022-09-29 6:53 ` Johan Hovold 2022-09-29 6:53 ` Johan Hovold 2022-09-28 15:28 ` [PATCH 05/13] phy: qcom-qmp-pcie: unify sdm845 registers Johan Hovold 2022-09-28 15:28 ` Johan Hovold 2022-09-28 16:01 ` Neil Armstrong 2022-09-28 16:01 ` Neil Armstrong 2022-09-28 16:03 ` Neil Armstrong 2022-09-28 16:03 ` Neil Armstrong 2022-09-28 19:11 ` Dmitry Baryshkov 2022-09-28 19:11 ` Dmitry Baryshkov 2022-09-28 15:28 ` Johan Hovold [this message] 2022-09-28 15:28 ` [PATCH 06/13] phy: qcom-qmp-pcie: drop bogus register update Johan Hovold 2022-09-28 19:10 ` Dmitry Baryshkov 2022-09-28 19:10 ` Dmitry Baryshkov 2022-09-28 19:48 ` Dmitry Baryshkov 2022-09-28 19:48 ` Dmitry Baryshkov 2022-09-29 7:12 ` Johan Hovold 2022-09-29 7:12 ` Johan Hovold 2022-09-29 7:56 ` Dmitry Baryshkov 2022-09-29 7:56 ` Dmitry Baryshkov 2022-09-29 8:18 ` Johan Hovold 2022-09-29 8:18 ` Johan Hovold 2022-09-29 6:56 ` Johan Hovold 2022-09-29 6:56 ` Johan Hovold 2022-09-28 15:28 ` [PATCH 07/13] phy: qcom-qmp-pcie: clean up power-down handling Johan Hovold 2022-09-28 15:28 ` Johan Hovold 2022-09-28 19:15 ` Dmitry Baryshkov 2022-09-28 19:15 ` Dmitry Baryshkov 2022-09-29 7:25 ` Johan Hovold 2022-09-29 7:25 ` Johan Hovold 2022-09-29 7:30 ` Dmitry Baryshkov 2022-09-29 7:30 ` Dmitry Baryshkov 2022-09-29 9:04 ` Johan Hovold 2022-09-29 9:04 ` Johan Hovold 2022-09-29 9:07 ` Dmitry Baryshkov 2022-09-29 9:07 ` Dmitry Baryshkov 2022-09-28 15:28 ` [PATCH 08/13] phy: qcom-qmp-pcie: move power-down update Johan Hovold 2022-09-28 15:28 ` Johan Hovold 2022-09-28 15:28 ` [PATCH 09/13] phy: qcom-qmp-pcie-msm8996: clean up power-down handling Johan Hovold 2022-09-28 15:28 ` Johan Hovold 2022-09-28 19:52 ` Dmitry Baryshkov 2022-09-28 19:52 ` Dmitry Baryshkov 2022-09-28 15:28 ` [PATCH 10/13] phy: qcom-qmp-combo: " Johan Hovold 2022-09-28 15:28 ` Johan Hovold 2022-09-28 19:53 ` Dmitry Baryshkov 2022-09-28 19:53 ` Dmitry Baryshkov 2022-09-28 15:28 ` [PATCH 11/13] phy: qcom-qmp-ufs: " Johan Hovold 2022-09-28 15:28 ` Johan Hovold 2022-09-28 19:53 ` Dmitry Baryshkov 2022-09-28 19:53 ` Dmitry Baryshkov 2022-09-28 15:28 ` [PATCH 12/13] phy: qcom-qmp-usb: " Johan Hovold 2022-09-28 15:28 ` Johan Hovold 2022-09-28 19:53 ` Dmitry Baryshkov 2022-09-28 19:53 ` Dmitry Baryshkov 2022-09-28 15:28 ` [PATCH 13/13] phy: qcom-qmp-pcie: clean up clock lists Johan Hovold 2022-09-28 15:28 ` Johan Hovold 2022-09-28 19:54 ` Dmitry Baryshkov 2022-09-28 19:54 ` Dmitry Baryshkov
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