From: Richard Zhu <hongxing.zhu@nxp.com>
To: conor@kernel.org, vkoul@kernel.org, kishon@kernel.org,
robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org,
frank.li@nxp.com, conor+dt@kernel.org
Cc: hongxing.zhu@nxp.com, linux-phy@lists.infradead.org,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, kernel@pengutronix.de,
imx@lists.linux.dev
Subject: [PATCH v5 0/2] Add i.MX8Q HSIO PHY support
Date: Mon, 13 May 2024 09:22:02 +0800 [thread overview]
Message-ID: <1715563324-6391-1-git-send-email-hongxing.zhu@nxp.com> (raw)
v5 changes:
dt-binding
- Fix dt_binding_check errors of fsl,refclk-pad-mode.
And, add the unused description of this property.
- Add description for each register entry.
- Add fsl,hsio-cfg description.
- Other minor refine changes.
PHY driver
- To make codes safe enough in multi instances probe, use scoped_guard()
to replace the atomic_###() callbacks.
v4:https://patchwork.kernel.org/project/linux-phy/cover/1715234181-672-1-git-send-email-hongxing.zhu@nxp.com/
v4 changes:
- Re-format the "phy-cells" as <&hsio_phy lane_id phy_mode controller_id>
- Use each lane as a phys entry, suggested by Rob.
PCIEA:
phys = <&hsio_phy 0 PHY_MODE_PCIE>;
or:
phys = <&hsio_phy 0 PHY_MODE_PCIE>, <&hsio_phy 1 PHY_MODE_PCIE>;
PCIEB:
phys = <&hsio_phy 1 PHY_MODE_PCIE>;
or:
phys = <&hsio_phy 2 PHY_MODE_PCIE>;
SATA:
phys = <&hsio_phy 2 PHY_MODE_SATA>;
- Add a new propery "fsl,hsio-cfg".
The HSIO configuration (fsl,hsio-cfg) is one global state.
It should be known and used to set global setting: PCIE_AB_SELECT and
PHY_X1_EPCS_SEL at the begin of HSIO initialization like this listed below.
+-------------------------------------------------------------+
|CRR(SYS.CSR) register|PCIAx2 and|PCIEAx1, PCIEBx1|PCIEAx2 and|
| |SATA |SATA |PCIEBx1 |
|---------------------|----------|----------------|-----------|
|PCIE_AB_SELECT | 0 | 1 | 1 |
|---------------------|----------|----------------|-----------|
|PHY_X1_EPCS_SEL | 1 | 1 | 0 |
+-------------------------------------------------------------+
When first PHY instance is probed, PHY driver can't get a global view of the
HSIO use case and doesn't know how to set global setting: PCIE_AB_SELECT and
PHYX1_EPCS_SEL.
Because first PHY instance doesn't know followed PHY instance use mode.
So, one property named "fsl,hsio-cfg" has to be introduced here to specify the
setting of the global setting: PCIE_AB_SELECT and PHY_X1_EPCS_SEL.
Here is the discussion about this.
https://lkml.org/lkml/2024/4/26/231
- Address Conor's comments about the "fsl,refclk-pad-mode".
fsl,refclk-pad-mode:
description:
...
enum: ["input", "output"].
v3:https://patchwork.kernel.org/project/linux-phy/cover/1713939683-15328-1-git-send-email-hongxing.zhu@nxp.com/
v3 changes:
Refer to Conor's comments.
- Let filename match a compatible
- Refine description of the fsl,refclk-pad-mode.
- Remove power-domains description.
- Keep clock ording for two devices.
- Drop the unused label and status.
Refer to Rob's comments.
- Use standard phy mode defines.
- Correct the spell mistakes in the binding document.
v2:https://patchwork.kernel.org/project/linux-phy/cover/1712036704-21064-1-git-send-email-hongxing.zhu@nxp.com/
v2 changes:
- Place the dt-bindings header file changes as the first one
in the patch-set, make the annotation more clear, and add
Frank's Reviewed-by tag.
v1:https://patchwork.kernel.org/project/linux-phy/cover/1711699790-16494-1-git-send-email-hongxing.zhu@nxp.com/
[PATCH v5 1/2] dt-bindings: phy: Add i.MX8Q HSIO SerDes PHY binding
[PATCH v5 2/2] phy: freescale: imx8qm-hsio: Add i.MX8QM HSIO PHY
Documentation/devicetree/bindings/phy/fsl,imx8qm-hsio.yaml | 152 +++++++++++++++++++++
drivers/phy/freescale/Kconfig | 8 ++
drivers/phy/freescale/Makefile | 1 +
drivers/phy/freescale/phy-fsl-imx8qm-hsio.c | 608 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
include/dt-bindings/phy/phy-imx8-pcie.h | 29 ++++
5 files changed, 798 insertions(+)
--
linux-phy mailing list
linux-phy@lists.infradead.org
https://lists.infradead.org/mailman/listinfo/linux-phy
next reply other threads:[~2024-05-13 1:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-13 1:22 Richard Zhu [this message]
2024-05-13 1:22 ` [PATCH v5 1/2] dt-bindings: phy: Add i.MX8Q HSIO SerDes PHY binding Richard Zhu
2024-05-13 16:01 ` Conor Dooley
2024-05-14 1:54 ` Hongxing Zhu
2024-05-13 1:22 ` [PATCH v5 2/2] phy: freescale: imx8qm-hsio: Add i.MX8QM HSIO PHY driver support Richard Zhu
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