| 3a03a0e4 | 02-Feb-2026 |
Arnd Bergmann <arnd@arndb.de> |
phy: renesas: rcar-gen3-usb2: add regulator dependency
The driver start registering a regulator, but can still be
enabled even when it is unable to call into the regulator
subsystem:
aarch64-linux-
phy: renesas: rcar-gen3-usb2: add regulator dependency
The driver start registering a regulator, but can still be
enabled even when it is unable to call into the regulator
subsystem:
aarch64-linux-ld: drivers/phy/renesas/phy-rcar-gen3-usb2.o: in function `rcar_gen3_phy_usb2_probe':
phy-rcar-gen3-usb2.c:(.text+0x2884): undefined reference to `devm_regulator_register'
Add a Kconfig dependency to avoid this configuration.
Fixes: b6d7dd157763 ("phy: renesas: rcar-gen3-usb2: Add regulator for OTG VBUS control")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Link: https://patch.msgid.link/20260202095118.1233046-1-arnd@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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| 8bb92fd7 | 22-Dec-2025 |
Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com> |
phy: renesas: rcar-gen3-usb2: Use mux-state for phyrst management
Add support for selecting the phyrst mux-state using the Linux mux
subsystem in the R-Car Gen3 USB2 PHY driver. This ensures correct
phy: renesas: rcar-gen3-usb2: Use mux-state for phyrst management
Add support for selecting the phyrst mux-state using the Linux mux
subsystem in the R-Car Gen3 USB2 PHY driver. This ensures correct hardware
initialization and integration with systems utilizing the mux-state device
tree property.
A temporary wrapper for optional muxes is introduced until native support
is available in the multiplexer subsystem.
Signed-off-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Link: https://patch.msgid.link/80aafdb2367dcada720b0a9ebeea344764e710fb.1766405010.git.tommaso.merciai.xr@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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| b6d7dd15 | 22-Dec-2025 |
Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com> |
phy: renesas: rcar-gen3-usb2: Add regulator for OTG VBUS control
Enable OTG VBUS control on R-Car Gen3 USB2 PHY by registering a regulator
driver that manages the VBOUT line. This change allows the
phy: renesas: rcar-gen3-usb2: Add regulator for OTG VBUS control
Enable OTG VBUS control on R-Car Gen3 USB2 PHY by registering a regulator
driver that manages the VBOUT line. This change allows the controller to
handle VBUS output for OTG ports using the regulator framework when the
platform requires hardware-based VBUS control.
Without this, some platforms cannot properly manage VBUS power on OTG-
capable ports, leading to potential USB functionality issues.
Signed-off-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Link: https://patch.msgid.link/6c1aebf60b4d8ff0c51a8243c68b397c1a384867.1766405010.git.tommaso.merciai.xr@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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| 230c817a | 22-Dec-2025 |
Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com> |
phy: renesas: rcar-gen3-usb2: Use devm_pm_runtime_enable()
Replace pm_runtime_enable() with devm_pm_runtime_enable() to ensure proper
cleanup if the probe fails. This change enhances driver reliabil
phy: renesas: rcar-gen3-usb2: Use devm_pm_runtime_enable()
Replace pm_runtime_enable() with devm_pm_runtime_enable() to ensure proper
cleanup if the probe fails. This change enhances driver reliability by
avoiding resource leaks, as the devm-managed version automatically handles
disabling at probe failure or device removal.
Signed-off-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Link: https://patch.msgid.link/ca028d41f84227efeccb0cbdff22fbf16e5cf6ab.1766405010.git.tommaso.merciai.xr@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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| ec581457 | 24-Sep-2025 |
Geert Uytterhoeven <geert+renesas@glider.be> |
phy: renesas: Remove unneeded semicolons
Semicolons after end of function braces are not needed, remove them.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Neil Armstrong
phy: renesas: Remove unneeded semicolons
Semicolons after end of function braces are not needed, remove them.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/a8807dafa87fcc3abcafd34a1895e4c722c39793.1758719985.git.geert+renesas@glider.be
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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| 942a7a6b | 19-Nov-2025 |
Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> |
phy: renesas: rcar-gen3-usb2: Add suspend/resume support
The Renesas RZ/G3S supports a power saving mode where power to most of the
SoC components is turned off. The USB PHY is among these component
phy: renesas: rcar-gen3-usb2: Add suspend/resume support
The Renesas RZ/G3S supports a power saving mode where power to most of the
SoC components is turned off. The USB PHY is among these components.
Because of this the settings applied in driver probe need to be executed
also on resume path. On suspend path only reset signal need to be asserted.
Add suspend/resume support.
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251119120418.686224-3-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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| 79d9db7f | 19-Nov-2025 |
Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> |
phy: renesas: rcar-gen3-usb2: Move phy_data->init_bus check
Move the check of phy_data->init_bus from rcar_gen3_phy_usb2_init_bus()
to rcar_gen3_phy_usb2_probe() to avoid having it duplicated in bot
phy: renesas: rcar-gen3-usb2: Move phy_data->init_bus check
Move the check of phy_data->init_bus from rcar_gen3_phy_usb2_init_bus()
to rcar_gen3_phy_usb2_probe() to avoid having it duplicated in both the
probe path and the upcoming resume code. This is a preparatory patch.
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251119120418.686224-2-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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| 662bb179 | 23-Oct-2025 |
Christophe JAILLET <christophe.jaillet@wanadoo.fr> |
phy: renesas: rcar-gen3-usb2: Fix an error handling path in rcar_gen3_phy_usb2_probe()
If an error occurs after the reset_control_deassert(),
reset_control_assert() must be called, as already done i
phy: renesas: rcar-gen3-usb2: Fix an error handling path in rcar_gen3_phy_usb2_probe()
If an error occurs after the reset_control_deassert(),
reset_control_assert() must be called, as already done in the remove
function.
Use devm_add_action_or_reset() to add the missing call and simplify the
.remove() function accordingly.
While at it, drop struct rcar_gen3_chan::rstc as it is not used aymore.
[claudiu.beznea: removed "struct reset_control *rstc = data;" from
rcar_gen3_reset_assert(), dropped struct rcar_gen3_chan::rstc]
Fixes: 4eae16375357 ("phy: renesas: rcar-gen3-usb2: Add support to initialize the bus")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Link: https://patch.msgid.link/20251023135810.1688415-3-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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| e4a8db93 | 03-Jul-2025 |
Michael Dege <michael.dege@renesas.com> |
phy: renesas: r8a779f0-ether-serdes: add new step added to latest datasheet
R-Car S4-8 datasheet Rev.1.20 describes some additional register
settings at the end of the initialization.
Signed-off-by
phy: renesas: r8a779f0-ether-serdes: add new step added to latest datasheet
R-Car S4-8 datasheet Rev.1.20 describes some additional register
settings at the end of the initialization.
Signed-off-by: Michael Dege <michael.dege@renesas.com>
Link: https://lore.kernel.org/r/20250703-renesas-serdes-update-v4-2-1db5629cac2b@renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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| 356590cd | 21-Aug-2025 |
Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> |
phy: renesas: rcar-gen3-usb2: Fix ID check logic with VBUS valid
The existing ID detection logic returned false when both IDDIG and
VBUSVALID were set, which caused incorrect role determination in s
phy: renesas: rcar-gen3-usb2: Fix ID check logic with VBUS valid
The existing ID detection logic returned false when both IDDIG and
VBUSVALID were set, which caused incorrect role determination in some
cases. The condition:
!(device && !vbus_valid)
did not properly reflect the intended relationship between IDDIG and
VBUSVALID signals.
Update the logic to:
return vbus_valid ? device : !device;
This ensures that when VBUS is valid, the role follows the IDDIG value,
and when VBUS is not valid, the role is inverted, matching the expected
OTG behavior.
Fixes: b725741f1c21 ("phy: renesas: rcar-gen3-usb2: Add support for RZ/T2H SoC")
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20250821155957.1088337-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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| 5f541344 | 08-Aug-2025 |
Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> |
phy: renesas: rcar-gen3-usb2: Move debug print after register value is updated
Relocate the debug print in rcar_gen3_enable_vbus_ctrl() to appear after
the `val` variable is assigned and updated bas
phy: renesas: rcar-gen3-usb2: Move debug print after register value is updated
Relocate the debug print in rcar_gen3_enable_vbus_ctrl() to appear after
the `val` variable is assigned and updated based on the VBUS state. This
ensures that the debug log reflects the actual register value being
written, improving debugging accuracy.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250808215209.3692744-6-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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| b725741f | 08-Aug-2025 |
Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> |
phy: renesas: rcar-gen3-usb2: Add support for RZ/T2H SoC
Add initial support for the Renesas RZ/T2H SoC to the R-Car Gen3 USB2 PHY
driver. The RZ/T2H SoC requires configuration of additional
hardwar
phy: renesas: rcar-gen3-usb2: Add support for RZ/T2H SoC
Add initial support for the Renesas RZ/T2H SoC to the R-Car Gen3 USB2 PHY
driver. The RZ/T2H SoC requires configuration of additional
hardware-specific bits for proper VBUS level control and OTG operation.
Introduce the `vblvl_ctrl` flag in the SoC-specific driver data to enable
handling of VBUS level selection logic using `VBCTRL.VBLVL` bits. This is
required for managing the VBUS status detection and drive logic based on
SoC-specific needs.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250808215209.3692744-5-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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| 4b7aa47e | 08-Aug-2025 |
Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> |
phy: renesas: rcar-gen3-usb2: Allow SoC-specific OBINT bits via phy_data
Update the PHY driver to support SoC-specific OBINT enable bits by
introducing the `obint_enable_bits` field in the `rcar_gen
phy: renesas: rcar-gen3-usb2: Allow SoC-specific OBINT bits via phy_data
Update the PHY driver to support SoC-specific OBINT enable bits by
introducing the `obint_enable_bits` field in the `rcar_gen3_phy_drv_data`
structure. This allows each SoC to specify bits required.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250808215209.3692744-4-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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| 86e70849 | 07-May-2025 |
Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> |
phy: renesas: rcar-gen3-usb2: Set timing registers only once
phy-rcar-gen3-usb2 driver exports 4 PHYs. The timing registers are common
to all PHYs. There is no need to set them every time a PHY is i
phy: renesas: rcar-gen3-usb2: Set timing registers only once
phy-rcar-gen3-usb2 driver exports 4 PHYs. The timing registers are common
to all PHYs. There is no need to set them every time a PHY is initialized.
Set timing register only when the 1st PHY is initialized.
Fixes: f3b5a8d9b50d ("phy: rcar-gen3-usb2: Add R-Car Gen3 USB2 PHY driver")
Cc: stable@vger.kernel.org
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Link: https://lore.kernel.org/r/20250507125032.565017-6-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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| 9ce71e85 | 07-May-2025 |
Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> |
phy: renesas: rcar-gen3-usb2: Assert PLL reset on PHY power off
Assert PLL reset on PHY power off. This saves power.
Fixes: f3b5a8d9b50d ("phy: rcar-gen3-usb2: Add R-Car Gen3 USB2 PHY driver")
Cc:
phy: renesas: rcar-gen3-usb2: Assert PLL reset on PHY power off
Assert PLL reset on PHY power off. This saves power.
Fixes: f3b5a8d9b50d ("phy: rcar-gen3-usb2: Add R-Car Gen3 USB2 PHY driver")
Cc: stable@vger.kernel.org
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Link: https://lore.kernel.org/r/20250507125032.565017-5-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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