- 24 Nov, 2022 1 commit
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Johan Hovold authored
The SM8250 only uses three clocks but the DP configuration erroneously described four clocks. In case the DP part of the PHY is initialised before the USB part, this would lead to uninitialised memory beyond the bulk-clocks array to be treated as a clock pointer as the clocks are requested based on the USB configuration. Fixes: aff188fe ("phy: qcom-qmp: add support for sm8250-usb3-dp phy") Cc: stable@vger.kernel.org # 5.13 Reviewed-by:
Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by:
Johan Hovold <johan+linaro@kernel.org> Link: https://lore.kernel.org/r/20221114081346.5116-2-johan+linaro@kernel.orgSigned-off-by:
Vinod Koul <vkoul@kernel.org>
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- 10 Nov, 2022 21 commits
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Yoshihiro Shimoda authored
Add Renesas Ethernet SERDES driver for R-Car S4-8 (r8a779f0). The datasheet describes initialization procedure without any information about registers' name/bits. So, this is all black magic to initialize the hardware. Especially, all channels should be initialized at once. Signed-off-by:
Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/20221108005500.3011449-3-yoshihiro.shimoda.uh@renesas.comSigned-off-by:
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Yoshihiro Shimoda authored
Document Renesas Etherent SERDES for R-Car S4-8 (r8a779f0). Signed-off-by:
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20221108005500.3011449-2-yoshihiro.shimoda.uh@renesas.comSigned-off-by:
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Manivannan Sadhasivam authored
sm8450_qmp_gen4x2_pcie_pcs_tbl[] contains the init sequence for PCS registers of QMP PHY v5.20. So use the v5.20 specific register names. Only major change is the rename of PCS_EQ_CONFIG{2/3} registers to PCS_EQ_CONFIG{4/5}. Fixes: 2c91bf6b ("phy: qcom-qmp: Add SM8450 PCIe1 PHY support") Signed-off-by:Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/20221102081835.41892-2-manivannan.sadhasivam@linaro.orgSigned-off-by:
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Manivannan Sadhasivam authored
The PCIe QMP 4x2 RC PHY generates high latency when ASPM is enabled. This seem to be fixed by clearing the QPHY_V5_20_PCS_PCIE_PRESET_P10_POST register of the pcs_misc register space. Fixes: 2c91bf6b ("phy: qcom-qmp: Add SM8450 PCIe1 PHY support") Signed-off-by:
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Christian Marangi authored
Commit af664324 ("phy: qcom-qmp-pcie: split pcs_misc region for ipq6018 pcie gen3") reworked the pcs regs values and removed the 0x400 offset for each pcs_misc regs. This change caused the malfunction of ipq8074 downstream since it still has the legacy pcs table where pcs_misc are not placed on a different table and instead put together assuming the offset of 0x400 for the related pcs_misc regs. Split pcs_misc init cfg from the ipq8074 pcs init table to be handled correctly to prepare for actual support for gen3 pcie for ipq8074. Fixes: af664324 ("phy: qcom-qmp-pcie: split pcs_misc region for ipq6018 pcie gen3") Reported-by:
Robert Marko <robimarko@gmail.com> Tested-by:
Christian Marangi <ansuelsmth@gmail.com> Link: https://lore.kernel.org/r/20221103212125.17156-1-ansuelsmth@gmail.comSigned-off-by:
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Johan Hovold authored
The PCIe2 and PCIe3 controllers and PHYs on SC8280XP can be used in 4-lane mode or as separate controllers and PHYs in 2-lane mode (e.g. as PCIe2A and PCIe2B). Add support for fetching the 4-lane configuration from the TCSR and programming the lane registers of the second port when in 4-lane mode. Reviewed-by:
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Johan Hovold authored
Add support for the single and dual-lane PHYs found on SC8280XP. Note that the SC8280XP binding does not try to describe every register subregion and instead the driver holds the corresponding offsets. Reviewed-by:
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Johan Hovold authored
Some QMP PHYs have a second fixed-divider pipe clock that needs to be enabled along with the pipe clock. Add support for an optional "pipediv2" clock. Reviewed-by:
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Johan Hovold authored
Add the missing delay after asserting reset. This is specifically needed for the reset to have any effect on SC8280XP. The vendor driver uses a 1 ms delay, but that seems a bit excessive. Instead use a 200 us delay which appears to be more than enough and also matches the UFS reset delay added by commit 870b1279 ("scsi: ufs-qcom: Add reset control support for host controller"). Reviewed-by:
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Johan Hovold authored
In preparation for supporting devicetree bindings which do not use a child node, move the PHY creation to probe() proper and parse the serdes resource in what is now the legacy devicetree helper. Reviewed-by:
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Johan Hovold authored
Add bindings for the PCIe QMP PHYs found on SC8280XP. The PCIe2 and PCIe3 controllers and PHYs on SC8280XP can be used in 4-lane mode or as separate controllers and PHYs in 2-lane mode (e.g. as PCIe2A and PCIe2B). The configuration for a specific system can be read from a TCSR register. Reviewed-by:
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Johan Hovold authored
The current QMP PCIe PHY bindings are based on the original MSM8996 binding which provided multiple PHYs per IP block and these in turn were described by child nodes. Later QMP PCIe PHY blocks only provide a single PHY and the remnant child node does not really reflect the hardware. The original MSM8996 binding also ended up describing the individual register blocks as belonging to either the wrapper node or the PHY child nodes. This is an unnecessary level of detail which has lead to problems when later IP blocks using different register layouts have been forced to fit the original mould rather than updating the binding. The bindings are arguable also incomplete as they only the describe register blocks used by the current Linux drivers (e.g. does not include the per lane PCS registers). In preparation for adding new bindings for SC8280XP which further bindings can be based on, rename the current schema file after IPQ8074, which was the first SoC added to the bindings after MSM8996 (which has already been split out), and add a reference to the SC8280XP bindings. Reviewed-by:
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Johan Hovold authored
Generalise the serdes initialisation helper so that it can be used to initialise all the PHY registers (e.g. serdes, tx, rx, pcs). Note that this defers the ungating of the PIPE clock somewhat, which is fine as it isn't needed until starting the PHY. Reviewed-by:
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Johan Hovold authored
The QMP drivers all use 'tbl' to refer to their register initialisation tables. For consistency use 'tbls' rather than 'tables' to refer to the new aggregate table structures. Signed-off-by:
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Johan Hovold authored
Clean up the PHY lane initialisation somewhat by adding further temporary variables and programming both tx and rx for the second lane after the first lane. Reviewed-by:
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Johan Hovold authored
Rename the PHY operation structure so that it has a "phy_ops" suffix and move it next to the implementation. Reviewed-by:
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Johan Hovold authored
Stop abusing the driver data pointer and instead pass the driver state structure directly to the initialisation helpers during probe. Reviewed-by:
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Johan Hovold authored
Since the QMP driver split there will be at most a single child node so drop the obsolete iteration construct. While at it, drop the verbose error logging that would have been printed also on probe deferrals. Note that there's no need to check if there are additional child nodes (the kernel is not a devicetree validator), but let's return an error if there are no child nodes at all for now. Reviewed-by:
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Johan Hovold authored
The PCIe QMP PHY driver only manages a single PHY so merge the old qcom_qmp and qmp_phy structures and drop the PHY array. Reviewed-by:
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Johan Hovold authored
Move the device-id table below probe() and next to the driver structure to keep the driver callback functions grouped together. Reviewed-by:
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Johan Hovold authored
Sort the device-id table by compatible string to make it easier to find and add new entries. Reviewed-by:
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- 07 Nov, 2022 14 commits
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Sean Anderson authored
Document the typical order of API calls to used by new drivers and controllers. Many existing controllers follow this order, but some do not. This is especially true for controllers designed to work with one particular PHY driver, which may not need a call to (for example) phy_init. Signed-off-by:
Sean Anderson <sean.anderson@seco.com> Link: https://lore.kernel.org/r/20221018175841.1906611-1-sean.anderson@seco.comSigned-off-by:
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Wayne Chang authored
Remove redundant codes for getting the vbus supply of usb3 ports because we get and control the vbus supply by the companion usb2 ports Signed-off-by:
Wayne Chang <waynec@nvidia.com> Signed-off-by:
Haotien Hsu <haotienh@nvidia.com> Reviewed-by:
Jon Hunter <jonathanh@nvidia.com> Link: https://lore.kernel.org/r/20221005084031.2154251-1-haotienh@nvidia.comSigned-off-by:
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Florian Fainelli authored
The wake-up interrupt lines are entirely optional, avoid printing messages that interrupts were not found by switching to the _optional variant. Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Acked-by:
Justin Chen <justinpopo6@gmail.com> Link: https://lore.kernel.org/r/20221026224450.2958762-1-f.fainelli@gmail.comSigned-off-by:
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Siddharth Vadapalli authored
Each of the CPSW9G ports in J721e support additional modes like QSGMII. Add a new compatible for J721e to support the additional modes. In TI's J721e, each of the CPSW9G ethernet interfaces can act as a QSGMII main or QSGMII-SUB port. The QSGMII main interface is responsible for performing auto-negotiation between the MAC and the PHY while the rest of the interfaces are designated as QSGMII-SUB interfaces, indicating that they will not be taking part in the auto-negotiation process. Signed-off-by:
Siddharth Vadapalli <s-vadapalli@ti.com> Reviewed-by:
Roger Quadros <rogerq@kernel.org> Link: https://lore.kernel.org/r/20221026074532.109220-4-s-vadapalli@ti.comSigned-off-by:
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Siddharth Vadapalli authored
The number of QSGMII main ports are specific to the device. TI's J7200 for which the QSGMII main port property is fetched from the device-tree has only one QSGMII main port. However, devices like TI's J721e support up to two QSGMII main ports. Thus, the existing methods for fetching and using the QSGMII main port are not scalable. Update the existing methods for handling the QSGMII main ports and its associated requirements to make it scalable for future devices. Signed-off-by:
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Siddharth Vadapalli authored
TI's J721e SoC supports additional PHY modes like QSGMII and SGMII that are not supported on earlier SoCs. Add a compatible for it. Extend ti,qsgmii-main-ports property to support selection of upto two main ports at once across the two QSGMII interfaces. Signed-off-by:
Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20221026074532.109220-2-s-vadapalli@ti.comSigned-off-by:
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Andre Przywara authored
The USB PHY used in the Allwinner H616 SoC inherits some traits from its various predecessors: it has four full PHYs like the H3, needs some extra bits to be set like the H6, and puts SIDDQ on a different bit like the A100. Plus it needs this weird PHY2 quirk. Name all those properties in a new config struct and assign a new compatible name to it. Signed-off-by:
Andre Przywara <andre.przywara@arm.com> Reviewed-by:
Samuel Holland <samuel@sholland.org> Link: https://lore.kernel.org/r/20221031111358.3387297-5-andre.przywara@arm.comSigned-off-by:
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Andre Przywara authored
At least the Allwinner H616 SoC requires a weird quirk to make most USB PHYs work: Only port2 works out of the box, but all other ports need some help from this port2 to work correctly: The CLK_BUS_PHY2 and RST_USB_PHY2 clock and reset need to be enabled, and the SIDDQ bit in the PMU PHY control register needs to be cleared. For this register to be accessible, CLK_BUS_ECHI2 needs to be ungated. Don't ask .... Instead of disguising this as some generic feature, treat it more like a quirk (what it really is): If the quirk bit is set, and we initialise a PHY other than PHY2, ungate this one special clock, and clear the SIDDQ bit. We also pick the clock and reset from PHY2 and enable them as well. Signed-off-by:
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Andre Przywara authored
The USB PHY IP in the Allwinner H616 SoC requires a quirk that involves some resources from port 2's PHY and HCI IP. In particular the PMU clock for port 2 must be surely ungated before accessing the REG_HCI_PHY_CTL register of port 2. To allow each USB port to be controlled independently of port 2, we need a handle to that particular PMU clock in the *PHY* node, as the HCI and PHY part might be handled by separate drivers. Add that clock to the requirements of the H616 PHY binding, so that a PHY driver can apply the quirk in isolation, without requiring help from port 2's HCI driver. Signed-off-by:
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Justin Chen authored
We should be disabling clocks when wake from USB is not needed. Since this wasn't done, we had a clock imbalance since clocks were always being enabled on resume. Fixes: ae532b2b ("phy: usb: Add "wake on" functionality for newer Synopsis XHCI controllers") Fixes: b0c0b66c ("phy: usb: Add support for wake and USB low power mode for 7211 S2/S5") Signed-off-by:
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Justin Chen authored
The logic was incorrect when switching to slow clock. We want the slow clock if wake_enabled is set. Fixes: ae532b2b ("phy: usb: Add "wake on" functionality for newer Synopsis XHCI controllers") Signed-off-by:
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Justin Chen authored
The BDC block requires the PLL lock in order to grab the PLL clock. The phy auto-suspend feature turns off the phy when nothing is attached leading to the PLL to not lock. This leads the BDC block to grab the AUX clock instead of the PLL clock. This is not ideal, so lets turn this feature off. Signed-off-by:
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Justin Chen authored
Using BIT and BITMASK macros makes it much easier to read and make modifications. Also reordered some constants to be in numerical order. Signed-off-by:
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Al Cooper authored
The PHY's "wakeup_count" is not incrementing when waking from WoL. The wakeup count can be found in sysfs at: /sys/bus/platform/devices/rdb/*.usb-phy/power/wakeup_count. The problem is that the system wakup event handler was being passed the wrong "device" by the PHY driver. Fixes: f1c0db40 ("phy: usb: Add "wake on" functionality") Signed-off-by:
Al Cooper <alcooperx@gmail.com> Signed-off-by:
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- 05 Nov, 2022 4 commits
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Justin Chen authored
Split port modes into two different variables. Supported port modes is what the hardware supports. While port mode is how the hardware is currently configured and can be dynamically changed through the sysfs. We initialize all supported port modes on init even though the port mode may not be selected because we cannot guarantee the downstream interface from the phy will be active or not. This also fixes an issue where port modes selected via sysfs were not being saved through suspend/resume. Signed-off-by:
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Johan Hovold authored
Add support for the new SC8280XP binding. Note that the binding does not try to describe every register subregion and instead the driver holds the corresponding offsets. This includes the PCS_USB region which was initially overlooked. Note that the driver will no longer accept the old binding due to the fixed "phy_phy" reset name. Reviewed-by:
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Johan Hovold authored
In preparation for supporting devicetree bindings which do not use a child node, move the PHY creation to probe() proper and parse the serdes and dp_com resources in what is now the legacy devicetree helper. Reviewed-by:
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Johan Hovold authored
The current QMP USB PHY bindings are based on the original MSM8996 PCIe PHY binding which provided multiple PHYs per IP block and these in turn were described by child nodes. The QMP USB PHY block only provide a single PHY and the remnant child node does not really reflect the hardware. The original MSM8996 binding also ended up describing the individual register blocks as belonging to either the wrapper node or the PHY child nodes. This is an unnecessary level of detail which has lead to problems when later IP blocks using different register layouts have been forced to fit the original mould rather than updating the binding. The bindings are arguable also incomplete as they only the describe register blocks used by the current Linux drivers (e.g. does not include the per lane PCS registers). Note that PCS_USB region is also not described by the current bindings despite being used by the driver and this has led to people increasing the size of the PCS region in the devicetree so that it includes PCS_USB registers even though other regions like TX and RX may lie in between. Add a new binding for the QMP USB PHYs found on SC8280XP which further bindings can be based on. Note that this also fixes the SC8280XP "phy_phy" reset name. Also note that the current binding is simply removed instead of being deprecated as it was only recently merged and support for SC8280XP is still under development. And, specifically, there is no support in mainline for the multiport controller that uses these PHYs. Signed-off-by:
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