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path: root/drivers/ufs/host/ufs-mediatek.h
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2025-10-21scsi: ufs: host: mediatek: Support new features for MT6991Naomi Chu
Add support for the MT6991 platform by enabling MRTT settings and random performance improvements. These enhancements aim to optimize performance and efficiency on the MT6991 hardware. Enable multi-Round Trip Time (MRTT) for improved data handling. Enable random performance improvement features to boost overall system responsiveness. Signed-off-by: Naomi Chu <naomi.chu@mediatek.com> Reviewed-by: Peter Wang <peter.wang@mediatek.com> Acked-by: Chun-Hung Wu <chun-hung.wu@mediatek.com> Signed-off-by: Peter Wang <peter.wang@mediatek.com> Link: https://patch.msgid.link/20250924094527.2992256-9-peter.wang@mediatek.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2025-10-21scsi: ufs: host: mediatek: Add support for new platform with MMIO_OTSD_CTRPeter Wang
Introduce support for a new UFS Mediatek platform by adding the REG_UFS_UFS_MMIO_OTSD_CTRL register. This update includes checks for legacy platforms and uses the new register to replace debug selection and handle specific operations. The changes ensure compatibility across different hardware versions and prevent potential issues with debug usage on newer platforms. Additional updates include error logging improvements during link setup for newer and legacy platforms, ensuring proper event logging and debugging. Signed-off-by: Peter Wang <peter.wang@mediatek.com> Acked-by: Chun-Hung Wu <chun-hung.wu@mediatek.com> Link: https://patch.msgid.link/20250924094527.2992256-8-peter.wang@mediatek.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2025-09-09scsi: ufs: host: mediatek: Support UFS PHY runtime PM and correct sequencePeter Wang
Add support for UFS PHY runtime power management by probing the PHY device and enabling its runtime PM. Ensure the correct sequence of operations during suspend and resume: PHY suspend -> UFS suspend -> UFS resume -> PHY resume. Improve power management efficiency and system stability with this enhancement. Signed-off-by: Peter Wang <peter.wang@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2025-07-24scsi: ufs: host: mediatek: Support FDE (AES) clock scalingPeter Wang
Add support for scaling the FDE (AES) clock to achieve higher performance, particularly for HS-G5: 1. Parse DTS settings for FDE min/max mux. 2. Scale up the FDE clock when required for enhanced performance. These changes ensure that the FDE clock can be dynamically adjusted based on performance needs, leveraging DTS configurations. Signed-off-by: Peter Wang <peter.wang@mediatek.com> Link: https://lore.kernel.org/r/20250722030841.1998783-10-peter.wang@mediatek.com Reviewed-by: Chun-Hung Wu <chun-hung.wu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2025-07-24scsi: ufs: host: mediatek: Support clock scaling with Vcore bindingPeter Wang
Add support for clock scaling with Vcore binding: 1. Parse the DTS setting for Vcore voltage. 2. Set the Vcore voltage to the DTS-specified value before scaling up. 3. Reset the Vcore voltage to the default setting after scaling down. These changes ensure that the Vcore voltage is appropriately managed during clock scaling operations to maintain system stability and performance. Signed-off-by: Peter Wang <peter.wang@mediatek.com> Link: https://lore.kernel.org/r/20250722030841.1998783-9-peter.wang@mediatek.com Reviewed-by: Chun-Hung Wu <chun-hung.wu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2025-07-24scsi: ufs: host: mediatek: Add more UFSCHI hardware versionsAlice Chao
Introduce a function for version control to distinguish between new and old platforms. Update the handling of hardware IP versions, ensuring correct version comparisons by adjusting the version format for specific projects. Signed-off-by: Alice Chao <alice.chao@mediatek.com> Link: https://lore.kernel.org/r/20250722030841.1998783-7-peter.wang@mediatek.com Reviewed-by: Peter Wang <peter.wang@mediatek.com> Reviewed-by: Chun-Hung Wu <chun-hung.wu@mediatek.com> Signed-off-by: Peter Wang <peter.wang@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2025-07-24scsi: ufs: host: mediatek: Handle broken RTC based on DTS settingPeter Wang
Introduce a mechanism to handle broken RTC by checking the DTS setting. The configuration is specifically required for legacy platform. Signed-off-by: Peter Wang <peter.wang@mediatek.com> Link: https://lore.kernel.org/r/20250722030841.1998783-5-peter.wang@mediatek.com Reviewed-by: Chun-Hung Wu <chun-hung.wu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2025-07-24scsi: ufs: host: mediatek: Add DDR_EN settingNaomi Chu
On MT6989 and later platforms, control of DDR_EN has been switched from SPM to EMI. To prevent abnormal access to DRAM, it is necessary to wait for 'ddren_ack' or assert 'ddren_urgent' after sending 'ddren_req'. Introduce the DDR_EN configuration in the UFS initialization flow, utilizing the assertion of 'ddren_urgent' to maintain performance. Signed-off-by: Naomi Chu <naomi.chu@mediatek.com> Link: https://lore.kernel.org/r/20250722030841.1998783-3-peter.wang@mediatek.com Reviewed-by: Peter Wang <peter.wang@mediatek.com> Reviewed-by: Chun-Hung Wu <chun-hung.wu@mediatek.com> Signed-off-by: Peter Wang <peter.wang@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2024-05-30scsi: ufs: core: Maximum RTT supported by the host driverAvri Altman
Allow platform vendors to take precedence having their own max rtt support. This makes sense because the host controller's nortt characteristic may vary among vendors. while at it, set this value for Mediatek, as requested by Peter - https://lore.kernel.org/all/0a57d6bab739d6a10584f2baba115d00dfc9c94c.camel@mediatek.com/ Signed-off-by: Avri Altman <avri.altman@wdc.com> Link: https://lore.kernel.org/r/20240530142510.734-3-avri.altman@wdc.com Reviewed-by: Peter Wang <peter.wang@mediatek.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2024-03-25scsi: ufs: mediatek: Support rtff in PM flowAlice Chao
Add mtcmos control function and config. Signed-off-by: Alice Chao <alice.chao@mediatek.com> Reviewed-by: Peter Wang <peter.wang@mediatek.com> Acked-by: Chun-Hung Wu <Chun-Hung.Wu@mediatek.com> Signed-off-by: Peter Wang <peter.wang@mediatek.com> Link: https://lore.kernel.org/r/20240315083448.7185-8-peter.wang@mediatek.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2024-03-25scsi: ufs: mediatek: Support mphy resetPeter Wang
Reset mphy when resetting host. Backup mphy setting after mphy reset control get. Restore mphy setting after mphy reset. Acked-by: Chun-Hung Wu <Chun-Hung.Wu@mediatek.com> Signed-off-by: Peter Wang <peter.wang@mediatek.com> Link: https://lore.kernel.org/r/20240315083448.7185-7-peter.wang@mediatek.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2024-03-25scsi: ufs: mediatek: UFS mtk sip command reconstructPo-Wen Kao
Move sip command and associated define to a new sip header file. Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com> Acked-by: Chun-Hung Wu <Chun-Hung.Wu@mediatek.com> Reviewed-by: Peter Wang <peter.wang@mediatek.com> Signed-off-by: Peter Wang <peter.wang@mediatek.com> Link: https://lore.kernel.org/r/20240315083448.7185-5-peter.wang@mediatek.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2024-03-25scsi: ufs: mediatek: Add UFS_MTK_CAP_DISABLE_MCQPo-Wen Kao
Add new mediatek host cap UFS_MTK_CAP_DISABLE_MCQ to allow disabling MCQ feature by assigning dts boolean property "mediatek,ufs-disable-mcq". Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com> Reviewed-by: Peter Wang <peter.wang@mediatek.com> Acked-by: Chun-Hung Wu <Chun-Hung.Wu@mediatek.com> Signed-off-by: Peter Wang <peter.wang@mediatek.com> Reviewed-by: Avri Altman <avri.altman@wdc.com> Link: https://lore.kernel.org/r/20240315083448.7185-4-peter.wang@mediatek.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2024-03-25scsi: ufs: mediatek: TX skew fixPeter Wang
Fix Mediatek TX skew issue by checking dts setting and vendor/model. Then set PA_TACTIVATE to 8. Signed-off-by: Peter Wang <peter.wang@mediatek.com> Acked-by: Chun-Hung Wu <Chun-Hung.Wu@mediatek.com> Reviewed-by: Avri Altman <avri.altman@wdc.com> Link: https://lore.kernel.org/r/20240315083448.7185-3-peter.wang@mediatek.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2024-03-25scsi: ufs: mediatek: Fix vsx/vccqx control logicPeter Wang
VSX (the upper layer of VCCQ/VCCQ2) should: 1. Always set to hpm mode if ufs device is active. 2. Enter lpm mode only if ufs device is not active. VCCQX should: 1. Keep hpm mode if vccq and vccq2 not set in dts. 2. Keep hpm mode if vcc not set in dts keep vcc always on. 3. Keep hpm if broken vcc keep vcc always on and not allow vccq lpm. 4. Except upper case, can enter lpm mode if ufs device is not active. Acked-by: Chun-Hung Wu <Chun-Hung.Wu@mediatek.com> Signed-off-by: Peter Wang <peter.wang@mediatek.com> Link: https://lore.kernel.org/r/20240315083448.7185-2-peter.wang@mediatek.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2024-01-23scsi: ufs: ufs-mediatek: Change default autosuspend timerPeter Wang
Change default autosuspend timer from 2000 ms to 500 ms for the MediaTek driver. Signed-off-by: Peter Wang <peter.wang@mediatek.com> Link: https://lore.kernel.org/r/20240109124015.31359-3-peter.wang@mediatek.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2024-01-23scsi: ufs: ufs-mediatek: Disable MCQ IRQ when clock offPeter Wang
Disable MCQ IRQ when clock is off. This is same as legacy mode. Signed-off-by: Peter Wang <peter.wang@mediatek.com> Link: https://lore.kernel.org/r/20231221110416.16176-4-peter.wang@mediatek.com Reviewed-by: Chun-Hung Wu <chun-hung.wu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2024-01-23scsi: ufs: ufs-mediatek: Migrate to UFSHCD generic CPU latency PM QoS supportMaramaina Naresh
The PM QoS feature found in the MediaTek UFS driver was moved to the UFSHCD core. Hence remove it from MediaTek UFS driver as it is redundant now. Reviewed-by: Peter Wang <peter.wang@mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Maramaina Naresh <quic_mnaresh@quicinc.com> Link: https://lore.kernel.org/r/20231219123706.6463-3-quic_mnaresh@quicinc.com Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-07-11scsi: ufs: ufs-mediatek: Add MCQ support for MTK platformPo-Wen Kao
Add UFS MCQ vops and IRQ handler for MediaTek platform. PM flow is fixed accordingly. Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com> Link: https://lore.kernel.org/r/20230701124442.10489-3-powen.kao@mediatek.com Suggested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-08-22scsi: ufs: ufs-mediatek: Support clk-scaling to optimize power consumptionPo-Wen Kao
Provide clk-scaling feature in MediaTek UFS platforms. MediaTek platform supports clk-scaling by switching parent clock mux of UFSHCI main clocks: ufs_sel. The driver needs to prevent changing the rate of ufs_sel because its parent PLL clock may be shared between multiple IPs. In order to achieve this goal, the maximum and minimum clock rates of ufs_sel defined in dts should match the rate of "ufs_sel_max_src" and "ufs_sel_min_src" respectively. Link: https://lore.kernel.org/r/20220802235437.4547-6-stanley.chu@mediatek.com Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-27scsi: ufs: ufs-mediatek: Support performance boostingPeter Wang
Add pm-qos request to support performance boosting in MediaTek UFS platforms. At the same time, adjust the order of function calls to be symmetric during the low-power control flow. Link: https://lore.kernel.org/r/20220623035052.18802-8-stanley.chu@mediatek.com Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Peter Wang <peter.wang@mediatek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-27scsi: ufs: ufs-mediatek: Support host power controlPo-Wen Kao
Add interfaces for controlling the host power to optimize the power consumption in MediaTek UFS platforms. Link: https://lore.kernel.org/r/20220623035052.18802-7-stanley.chu@mediatek.com Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-27scsi: ufs: ufs-mediatek: Add stage information for ref-clk controlPeter Wang
Add "PRE_CHANGE" and "POST_CHANGE" information for ref-clk control to precisely configure the low-power state of the parent of ref-clk. Link: https://lore.kernel.org/r/20220623035052.18802-5-stanley.chu@mediatek.com Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Peter Wang <peter.wang@mediatek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-27scsi: ufs: ufs-mediatek: Prevent host hang by setting CLK_CG earlyPeter Wang
Some UFSHCI hosts in MediaTek UFS platform need workaround to prevent host hang issue by setting CLK_CG bit before host is enabled. This operation shall have no side effect on those platforms which do not support this bit. Link: https://lore.kernel.org/r/20220623035052.18802-4-stanley.chu@mediatek.com Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Peter Wang <peter.wang@mediatek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-16scsi: ufs: ufs-mediatek: Support multiple VCC sourcesStanley Chu
Support multiple VCC sources in MediaTek UFS platforms. Two options are provided and distinguished by specific device tree attributes as below examples, [Option 1: By numbering] mediatek,ufs-vcc-by-num; vcc-opt1-supply = <&mt6373_vbuck4_ufs>; vcc-opt2-supply = <&mt6363_vemc>; [Option 2: By UFS version] mediatek,ufs-vcc-by-ver; vcc-ufs3-supply = <&mt6373_vbuck4_ufs>; Link: https://lore.kernel.org/r/20220616053725.5681-11-stanley.chu@mediatek.com Signed-off-by: Alice Chao <alice.chao@mediatek.com> Signed-off-by: Peter Wang <peter.wang@mediatek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-16scsi: ufs: ufs-mediatek: Support low-power mode for parents of VCCQxStanley Chu
Provide the facility to configure parents of VCCQx power rails as low-power or full-power mode in MediaTek UFS platforms. Link: https://lore.kernel.org/r/20220616053725.5681-9-stanley.chu@mediatek.com Signed-off-by: Alice Chao <alice.chao@mediatek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-16scsi: ufs: ufs-mediatek: Support flexible parameters for SMC callsStanley Chu
Provide flexible number of parameters for UFS SMC calls to be used in a subsequent commit. Link: https://lore.kernel.org/r/20220616053725.5681-8-stanley.chu@mediatek.com Signed-off-by: Alice Chao <alice.chao@mediatek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-06-16scsi: ufs: ufs-mediatek: Introduce workaround for power mode changeCC Chou
Some MediaTek SoC chips need special flow for power mode change, especially for chips supporting HS-G5. Enable the workaround by setting the host-specific capability. Link: https://lore.kernel.org/r/20220616053725.5681-4-stanley.chu@mediatek.com Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: CC Chou <cc.chou@mediatek.com> Signed-off-by: Eddie Huang <eddie.huang@mediatek.com> Signed-off-by: Dennis Yu <tun-yu.yu@mediatek.com> Signed-off-by: Peter Wang <peter.want@medaitek.com> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-05-19scsi: ufs: Split the drivers/scsi/ufs directoryBart Van Assche
Split the drivers/scsi/ufs directory into 'core' and 'host' directories under the drivers/ufs/ directory. Move shared header files into the include/ufs/ directory. This separation makes it clear which header files UFS drivers are allowed to include (include/ufs/*.h) and which header files UFS drivers are not allowed to include (drivers/ufs/core/*.h). Update the MAINTAINERS file. Add myself as a UFS reviewer. Link: https://lore.kernel.org/r/20220511212552.655341-1-bvanassche@acm.org Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Avri Altman <avri.altman@wdc.com> Cc: Bean Huo <beanhuo@micron.com> Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Cc: Keoseong Park <keosung.park@samsung.com> Tested-by: Bean Huo <beanhuo@micron.com> Tested-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Bean Huo <beanhuo@micron.com> Acked-by: Avri Altman <avri.altman@wdc.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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