u-boot.git/drivers/ufs, branch v2025.04

ufs: Add Support for Qualcomm UFS HC driver

2024-10-14T06:56:03Z

Add Support for the Host Controller driver for UFS HC present on Qualcomm Snapdragon SoCs. It has been successfully tested on SDM845, SM8250, SM8550 ant SM8650 SoCs. Signed-off-by: Bhupesh Sharma Tested-by: Julius Lehmann Tested-by: Caleb Connolly #rb3gen2 Link: https://lore.kernel.org/r/20240910-topic-ufs-qcom-controller-v1-4-54c0d2231b10@linaro.org Signed-off-by: Neil Armstrong

ufs: allow UFSHCI version 4.0

2024-10-14T06:56:03Z

Add UFSHCI version 4.0 found on the recent Qualcomm UFS Controllers. Tested-by: Julius Lehmann Tested-by: Caleb Connolly #rb3gen2 Link: https://lore.kernel.org/r/20240910-topic-ufs-qcom-controller-v1-3-54c0d2231b10@linaro.org Signed-off-by: Neil Armstrong

ufs: add get_max_pwr_mode callback

2024-10-14T06:56:03Z

Add a new get_max_pwr_mode callback to permit the UFS controller driver manipulate the max_pwr_mode struct right before setting the new pwr_mode to the UFS device. It can be used to limit the HS Gear with errata and hardware limitations on some UFS controllers. Tested-by: Julius Lehmann Tested-by: Caleb Connolly #rb3gen2 Link: https://lore.kernel.org/r/20240910-topic-ufs-qcom-controller-v1-2-54c0d2231b10@linaro.org Signed-off-by: Neil Armstrong

ufs: add device_reset callback

2024-10-14T06:56:03Z

Add device_reset op to permit resetting the UFS device if the UFS controller drivers supports the operation. Tested-by: Julius Lehmann Tested-by: Caleb Connolly #rb3gen2 Link: https://lore.kernel.org/r/20240910-topic-ufs-qcom-controller-v1-1-54c0d2231b10@linaro.org Signed-off-by: Neil Armstrong

ufs: ufs-amd-versal2: Add support for AMD UFS controller

2024-10-14T06:55:35Z

Add UFS AMD platform support on top of the UFS DWC and UFS platform driver. UFS AMD platform requires some platform specific configurations like M-PHY/RMMI/UniPro and vendor specific registers programming before doing the LINKSTARTUP. Signed-off-by: Venkatesh Yadav Abbarapu Reviewed-by: Neil Armstrong Link: https://lore.kernel.org/r/20240920041651.18173-3-venkatesh.abbarapu@amd.com Signed-off-by: Neil Armstrong

ufs: add support for DesignWare Controller

2024-10-14T06:55:35Z

This patch has the goal to add support for DesignWare UFS Controller specific operations. This is based on linux kernel commit: "drivers/scsi/ufs/ufshcd-dwc.c: ufs: add support for DesignWare Controller" (sha1: 4b9ffb5a353bdee49f1f477ffe2b95ab3f9cbc0c) It is ported from linux kernel 6.11-rc1. Signed-off-by: Venkatesh Yadav Abbarapu Reviewed-by: Neil Armstrong Link: https://lore.kernel.org/r/20240920041651.18173-2-venkatesh.abbarapu@amd.com Signed-off-by: Neil Armstrong

ufs: core: remove link_startup_again logic

2024-10-14T06:55:28Z

The link_startup_again logic was added in Linux to handle device that were set in LinkDown state, which should not be the case since U-boot doesn't set LinkDown state are init, and Linux sets the device active in ufshcd_init() for the first link startup. ufshcd_set_ufs_dev_active(hba) is called at ufshcd_init() right before scheduling an ufshcd_async_scan that will call ufshcd_device_init() then ufshcd_link_startup(). The comment in probe says: /* * We are assuming that device wasn't put in sleep/power-down * state exclusively during the boot stage before kernel. * This assumption helps avoid doing link startup twice during * ufshcd_probe_hba(). */ we can assume the same from U-Boot. While it worked to far, it breaks link startup for Qualcomm Controllers v5, let's just remove the logic. Tested-by: Venkatesh Yadav Abbarapu Tested-by: Julius Lehmann Link: https://lore.kernel.org/r/20240930-topic-ufs-enhancements-v3-12-58234f84ab89@linaro.org Signed-off-by: Neil Armstrong

ufs: Fix debug message in 'ufs_start'

2024-10-14T06:55:28Z

Minor typo fix and rewording of printf message inside 'ufs_start' which announces the availability of the UFS device. Signed-off-by: Bhupesh Sharma Tested-by: Venkatesh Yadav Abbarapu Tested-by: Julius Lehmann Link: https://lore.kernel.org/r/20240930-topic-ufs-enhancements-v3-11-58234f84ab89@linaro.org Signed-off-by: Neil Armstrong

ufs: Add missing memory barriers

2024-10-14T06:55:28Z

Add missing wmb() and mb() barriers in the u-boot UFS core framework driver to allow registers updates to happen before follow-up read operations. This makes the barrier placement similar to the Linux UFS driver, synced from the Linux v6.9 release. Starting from the v6.10 release, the barriers were replaced with a register read-back in [1], this will ported to u-boot in a second time. [1] https://lore.kernel.org/all/20240329-ufs-reset-ensure-effect-before-delay-v5-0-181252004586@redhat.com/ Signed-off-by: Bhupesh Sharma Tested-by: Venkatesh Yadav Abbarapu Tested-by: Julius Lehmann Link: https://lore.kernel.org/r/20240930-topic-ufs-enhancements-v3-10-58234f84ab89@linaro.org Signed-off-by: Neil Armstrong

ufs: Sync possible UFS Quirks with Linux UFS driver

2024-10-14T06:55:28Z

Sync u-boot UFS driver to add all possible UFS Quirks as supported by Linux UFS driver as well. Synced with include/ufs/ufshcd.h from Linux v6.11 release Signed-off-by: Bhupesh Sharma Tested-by: Venkatesh Yadav Abbarapu Tested-by: Julius Lehmann Link: https://lore.kernel.org/r/20240930-topic-ufs-enhancements-v3-9-58234f84ab89@linaro.org Signed-off-by: Neil Armstrong