linux-dev/drivers/phy/renesas, branch master

phy: renesas: phy-rcar-gen3-usb2: Add USB2.0 PHY support for RZ/G2L

2021-08-06T12:42:30Z

This patch adds USB2.0 PHY support for RZ/G2L SoC. We need to use a different compatible string due to some differences with R-Car Gen3 USB2.0 PHY. It uses line ctrl register for OTG_ID pin changes and different OTG-BC interrupt bit for device recognition. Signed-off-by: Biju Das Reviewed-by: Lad Prabhakar Reviewed-by: Yoshihiro Shimoda Tested-by: Yoshihiro Shimoda # on R-Car Link: https://lore.kernel.org/r/20210727185527.19907-4-biju.das.jz@bp.renesas.com Signed-off-by: Vinod Koul

phy: renesas: rcar-gen3-usb2: disable runtime pm in case of failure

2020-12-05T08:06:12Z

pm_runtime_enable() will decrease power disable depth. Thus a pairing increment is needed on the error handling path to keep it balanced. Fixes: 5d8042e95fd4 ("phy: rcar-gen3-usb2: Add support for r8a77470") Reported-by: Hulk Robot Signed-off-by: Wang Li Link: https://lore.kernel.org/r/20201126024412.4046845-1-wangli74@huawei.com Signed-off-by: Vinod Koul

phy: renesas: convert to devm_platform_ioremap_resource

2020-11-16T07:17:47Z

Use devm_platform_ioremap_resource to simplify code Signed-off-by: Chunfeng Yun Link: https://lore.kernel.org/r/1604642930-29019-12-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Vinod Koul

phy: renesas: rcar-gen3-usb2: exit if request_irq() failed

2020-07-20T06:33:44Z

To avoid unexpected behaviors, it's better to exit if request_irq() failed. Suggested-by: Vinod Koul Signed-off-by: Yoshihiro Shimoda Link: https://lore.kernel.org/r/1594986297-12434-3-git-send-email-yoshihiro.shimoda.uh@renesas.com Signed-off-by: Vinod Koul

phy: renesas: rcar-gen3-usb2: move irq registration to init

2020-07-20T06:33:44Z

If CONFIG_DEBUG_SHIRQ was enabled, r8a77951-salvator-xs could boot correctly. If we appended "earlycon keep_bootcon" to the kernel command like, we could get kernel log like below. SError Interrupt on CPU0, code 0xbf000002 -- SError CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.8.0-rc3-salvator-x-00505-g6c843129e6faaf01 #785 Hardware name: Renesas Salvator-X 2nd version board based on r8a77951 (DT) pstate: 60400085 (nZCv daIf +PAN -UAO BTYPE=--) pc : rcar_gen3_phy_usb2_irq+0x14/0x54 lr : free_irq+0xf4/0x27c This means free_irq() calls the interrupt handler while PM runtime is not getting if DEBUG_SHIRQ is enabled and rcar_gen3_phy_usb2_probe() failed. To fix the issue, move the irq registration place to rcar_gen3_phy_usb2_init() which is ready to handle the interrupts. Note that after the commit 549b6b55b005 ("phy: renesas: rcar-gen3-usb2: enable/disable independent irqs") which is merged into v5.2, since this driver creates multiple phy instances, needs to check whether one of phy instances is initialized. However, if we backport this patch to v5.1 or less, we don't need to check it because such kernel have single phy instance. Reported-by: Wolfram Sang Reported-by: Geert Uytterhoeven Fixes: 9f391c574efc ("phy: rcar-gen3-usb2: add runtime ID/VBUS pin detection") Signed-off-by: Yoshihiro Shimoda Link: https://lore.kernel.org/r/1594986297-12434-2-git-send-email-yoshihiro.shimoda.uh@renesas.com Signed-off-by: Vinod Koul

phy: renesas: phy-rcar-gen2: Fix the array off by one warning

2019-10-31T11:24:01Z

Fix the below smatch warning by adding variable check rather than the hardcoded value. warn: array off by one? 'data->select_value[channel_num]' Reported-by: Dan Carpenter Signed-off-by: Biju Das Reviewed-by: Geert Uytterhoeven Reviewed-by: Wolfram Sang Reviewed-by: Ulrich Hecht Reviewed-by: Yoshihiro Shimoda Signed-off-by: Kishon Vijay Abraham I

phy: renesas: rcar-gen3-usb2: Fix sysfs interface of "role"

2019-10-23T07:50:37Z

Since the role_store() uses strncmp(), it's possible to refer out-of-memory if the sysfs data size is smaller than strlen("host"). This patch fixes it by using sysfs_streq() instead of strncmp(). Reported-by: Pavel Machek Fixes: 9bb86777fb71 ("phy: rcar-gen3-usb2: add sysfs for usb role swap") Cc: # v4.10+ Signed-off-by: Yoshihiro Shimoda Reviewed-by: Geert Uytterhoeven Acked-by: Pavel Machek Signed-off-by: Kishon Vijay Abraham I

phy: renesas: rcar-gen3-usb2: Use platform_get_irq_optional() for optional irq

2019-10-23T07:50:27Z

As platform_get_irq() now prints an error when the interrupt does not exist, a scary warning may be printed for an optional interrupt: phy_rcar_gen3_usb2 ee0a0200.usb-phy: IRQ index 0 not found Fix this by calling platform_get_irq_optional() instead. Fixes: 7723f4c5ecdb8d83 ("driver core: platform: Add an error message to platform_get_irq*()") Signed-off-by: Geert Uytterhoeven Reviewed-by: Yoshihiro Shimoda Reviewed-by: Stephen Boyd Tested-by: Yoshihiro Shimoda Signed-off-by: Kishon Vijay Abraham I

phy: renesas: rcar-gen3-usb2: Disable clearing VBUS in over-current

2019-08-26T11:50:02Z

The hardware manual should be revised, but the initial value of VBCTRL.OCCLREN is set to 1 actually. If the bit is set, the hardware clears VBCTRL.VBOUT and ADPCTRL.DRVVBUS registers automatically when the hardware detects over-current signal from a USB power switch. However, since the hardware doesn't have any registers which indicates over-current, the driver cannot handle it at all. So, if "is_otg_channel" hardware detects over-current, since ADPCTRL.DRVVBUS register is cleared automatically, the channel cannot be used after that. To resolve this behavior, this patch sets the VBCTRL.OCCLREN to 0 to keep ADPCTRL.DRVVBUS even if the "is_otg_channel" hardware detects over-current. (We assume a USB power switch itself protects over-current and turns the VBUS off.) This patch is inspired by a BSP patch from Kazuya Mizuguchi. Fixes: 1114e2d31731 ("phy: rcar-gen3-usb2: change the mode to OTG on the combined channel") Cc: # v4.5+ Signed-off-by: Yoshihiro Shimoda Signed-off-by: Kishon Vijay Abraham I

Merge tag 'phy-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy into usb-next

2019-07-01T13:04:59Z

phy: for 5.3 *) Add a new PHY driver for Qualcomm PCIe2 PHY *) Add a new PHY driver for Mixel DPHY present in i.MX8 *) Fix Qualcomm QMP UFS PHY driver from incorrectly reporting that PHY enable failed *) Fix _BUG_ on Amlogic G12A USB3 + PCIE Combo PHY Driver due to calling a sleeping function from invalid context *) Fix WARN_ON dump on rcar-gen3-usb2 PHY driver caused due to imbalance powered flag *) Fix .cocci and sparse warnings Signed-off-by: Kishon Vijay Abraham I * tag 'phy-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy: phy: qcom-qmp: Raise qcom_qmp_phy_enable() polling delay phy: meson-g12a-usb3-pcie: disable locking for cr_regmap phy: Add driver for mixel mipi dphy found on NXP's i.MX8 SoCs dt-bindings: phy: Add documentation for mixel dphy dt-bindings: phy-pxa-usb: add bindings phy: renesas: rcar-gen3-usb2: fix imbalance powered flag phy: qcom-qmp: Drop useless msm8998_pciephy_cfg setting phy: qcom-qmp: Correct READY_STATUS poll break condition phy: ti: am654-serdes: Make serdes_am654_xlate() static phy: usb: phy-brcm-usb: Fix platform_no_drv_owner.cocci warnings phy: samsung: Use struct_size() in devm_kzalloc() phy: qcom: Add Qualcomm PCIe2 PHY driver dt-bindings: phy: Add binding for Qualcomm PCIe2 PHY