kernel/git/stable/linux-stable.git/drivers/ufs/host, branch linux-6.15.y

scsi: ufs: qcom: Prevent calling phy_exit() before phy_init()

2025-06-19T13:40:47+00:00

[ Upstream commit 7831003165d37ecb7b33843fcee05cada0359a82 ] Prevent calling phy_exit() before phy_init() to avoid abnormal power count and the following warning during boot up. [5.146763] phy phy-1d80000.phy.0: phy_power_on was called before phy_init Fixes: 7bac65687510 ("scsi: ufs: qcom: Power off the PHY if it was already powered on in ufs_qcom_power_up_sequence()") Signed-off-by: Nitin Rawat Link: https://lore.kernel.org/r/20250526153821.7918-2-quic_nitirawa@quicinc.com Reviewed-by: Konrad Dybcio Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin

scsi: ufs: qcom: Map devfreq OPP freq to UniPro Core Clock freq

2025-06-19T13:40:47+00:00

[ Upstream commit 8c5bcb3daeef9bc54c9939c36dca9a626126eb59 ] On some platforms, the devfreq OPP freq may be different than the unipro core clock freq. Implement ufs_qcom_opp_freq_to_clk_freq() and use it to find the unipro core clk freq. Fixes: c02fe9e222d1 ("scsi: ufs: qcom: Implement the freq_to_gear_speed() vop") Signed-off-by: Can Guo Co-developed-by: Ziqi Chen Signed-off-by: Ziqi Chen Link: https://lore.kernel.org/r/20250522021537.999107-3-quic_ziqichen@quicinc.com Reported-by: Luca Weiss Closes: https://lore.kernel.org/linux-arm-msm/D9FZ9U3AEXW4.1I12FX3YQ3JPW@fairphone.com/ Tested-by: Luca Weiss Reviewed-by: Bean Huo Tested-by: Loïc Minier Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin

scsi: ufs: qcom: Check gear against max gear in vop freq_to_gear()

2025-06-19T13:40:46+00:00

[ Upstream commit 663d0c19f3acc0d697f623d34b8eb3b438bf2bda ] The vop freq_to_gear() may return a gear greater than the negotiated max gear. Return the negotiated max gear if the mapped gear is greater. Fixes: c02fe9e222d1 ("scsi: ufs: qcom: Implement the freq_to_gear_speed() vop") Signed-off-by: Ziqi Chen Link: https://lore.kernel.org/r/20250522021537.999107-2-quic_ziqichen@quicinc.com Reported-by: Neil Armstrong Closes: https://lore.kernel.org/all/c7f2476a-943a-4d73-ad80-802c91e5f880@linaro.org/ Tested-by: Neil Armstrong Reviewed-by: Bean Huo Tested-by: Loïc Minier Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin

scsi: ufs: qcom: Add quirks for Samsung UFS devices

2025-04-12T02:13:00+00:00

Introduce quirks for Samsung UFS devices to adjust PA TX HSG1 sync length and TX_HS_EQUALIZER settings on the Qualcomm UFS Host controller. This ensures proper functionality of Samsung UFS devices with the Qualcomm UFS Host controller. Signed-off-by: Manish Pandey Link: https://lore.kernel.org/r/20250411121630.21330-2-quic_mapa@quicinc.com Reviewed-by: Bean Huo Reviewed-by: Manivannan Sadhasivam Signed-off-by: Martin K. Petersen

Merge branch '6.15/scsi-queue' into 6.15/scsi-fixes

2025-04-09T02:04:31+00:00

Pull in remaining fixes from 6.15/scsi-queue. Signed-off-by: Martin K. Petersen

Merge patch series "ufs-exynos stability fixes for gs101"

2025-04-03T13:58:05+00:00

Peter Griffin says: Hi folks, This series fixes several stability issues with the upstream ufs-exynos driver, specifically for the gs101 SoC found in Pixel 6. The main fix is regarding the IO cache coherency setting and ensuring that it is correctly applied depending on if the dma-coherent property is specified in device tree. This fixes the UFS stability issues on gs101 and I would imagine will also fix issues on exynosauto platform that seems to have similar iocc shareability bits. Additionally the phy reference counting is fixed which allows module load/unload to work reliably and keeps the phy state machine in sync with the controller glue driver. regards, Peter Link: https://lore.kernel.org/r/20250319-exynos-ufs-stability-fixes-v2-0-96722cc2ba1b@linaro.org Signed-off-by: Martin K. Petersen

scsi: ufs: exynos: gs101: Put UFS device in reset on .suspend()

2025-04-03T13:53:51+00:00

GPIO_OUT[0] is connected to the reset pin of embedded UFS device. Before powering off the phy assert the reset signal. This is added as a gs101 specific suspend hook so as not to have any unintended consequences for other SoCs supported by this driver. Signed-off-by: Peter Griffin Link: https://lore.kernel.org/r/20250319-exynos-ufs-stability-fixes-v2-7-96722cc2ba1b@linaro.org Reviewed-by: Bart Van Assche Signed-off-by: Martin K. Petersen

scsi: ufs: exynos: Move phy calls to .exit() callback

2025-04-03T13:53:51+00:00

ufshcd_pltfrm_remove() calls ufshcd_remove(hba) which in turn calls ufshcd_hba_exit(). By moving the phy_power_off() and phy_exit() calls to the newly created .exit callback they get called by ufshcd_variant_hba_exit() before ufshcd_hba_exit() turns off the regulators. This is also similar flow to the ufs-qcom driver. Signed-off-by: Peter Griffin Link: https://lore.kernel.org/r/20250319-exynos-ufs-stability-fixes-v2-6-96722cc2ba1b@linaro.org Reviewed-by: Bart Van Assche Signed-off-by: Martin K. Petersen

scsi: ufs: exynos: Enable PRDT pre-fetching with UFSHCD_CAP_CRYPTO

2025-04-03T13:53:51+00:00

PRDT_PREFETCH_ENABLE[31] bit should be set when desctype field of fmpsecurity0 register is type2 (double file encryption) or type3 (support for file and disk encryption). Setting this bit enables PRDT pre-fetching on both TXPRDT and RXPRDT. Signed-off-by: Peter Griffin Link: https://lore.kernel.org/r/20250319-exynos-ufs-stability-fixes-v2-5-96722cc2ba1b@linaro.org Reviewed-by: Bart Van Assche Signed-off-by: Martin K. Petersen

scsi: ufs: exynos: Ensure consistent phy reference counts

2025-04-03T13:53:51+00:00

ufshcd_link_startup() can call ufshcd_vops_link_startup_notify() multiple times when retrying. This causes the phy reference count to keep increasing and the phy to not properly re-initialize. If the phy has already been previously powered on, first issue a phy_power_off() and phy_exit(), before re-initializing and powering on again. Signed-off-by: Peter Griffin Link: https://lore.kernel.org/r/20250319-exynos-ufs-stability-fixes-v2-4-96722cc2ba1b@linaro.org Fixes: 3d73b200f989 ("scsi: ufs: ufs-exynos: Change ufs phy control sequence") Cc: stable@vger.kernel.org Reviewed-by: Bart Van Assche Signed-off-by: Martin K. Petersen