[PATCH v4 1/3] dt-bindings: phy: phy-imx8-pcie: Add header file for i.MX8Q HSIO SerDes PHY

From: Richard Zhu
Date: Thu May 09 2024 - 02:16:02 EST


Add lane index and HSIO configuration definitions of the i.MX8Q HSIO
SerDes PHY into header file.

Signed-off-by: Richard Zhu <hongxing.zhu@xxxxxxx>
Reviewed-by: Frank Li <Frank.Li@xxxxxxx>
---
include/dt-bindings/phy/phy-imx8-pcie.h | 29 +++++++++++++++++++++++++
1 file changed, 29 insertions(+)

diff --git a/include/dt-bindings/phy/phy-imx8-pcie.h b/include/dt-bindings/phy/phy-imx8-pcie.h
index 8bbe2d6538d8..8f65a77fca09 100644
--- a/include/dt-bindings/phy/phy-imx8-pcie.h
+++ b/include/dt-bindings/phy/phy-imx8-pcie.h
@@ -11,4 +11,33 @@
#define IMX8_PCIE_REFCLK_PAD_INPUT 1
#define IMX8_PCIE_REFCLK_PAD_OUTPUT 2

+/*
+ * Regarding the design of i.MX8QM HSIO subsystem, HSIO module can be
+ * confiured as following three use cases.
+ *
+ * Define different configurations refer to the use cases, since it is
+ * mandatory required in the initialization.
+ *
+ * On i.MX8QXP, HSIO module only has PCIEB and one lane PHY.
+ * Define "IMX8Q_HSIO_CFG_PCIEB" for i.MX8QXP platforms.
+ *
+ * +----------------------------------------------------+----------+
+ * | | i.MX8QM | i.MX8QXP |
+ * |-------------------------------|--------------------|----------|
+ * | | Lane0| Lane1| Lane2| Lane0 |
+ * |-------------------------------|------|------|------|----------|
+ * | IMX8Q_HSIO_CFG_PCIEAX2SATA | PCIEA| PCIEA| SATA | |
+ * |-------------------------------|------|------|------|----------|
+ * | IMX8Q_HSIO_CFG_PCIEAX2PCIEB | PCIEA| PCIEA| PCIEB| |
+ * |-------------------------------|------|------|------|----------|
+ * | IMX8Q_HSIO_CFG_PCIEAPCIEBSATA | PCIEA| PCIEB| SATA | |
+ * |-------------------------------|------|------|------|----------|
+ * | IMX8Q_HSIO_CFG_PCIEB | - | - | - | PCIEB |
+ * +----------------------------------------------------+----------+
+ */
+#define IMX8Q_HSIO_CFG_PCIEAX2SATA 0x1
+#define IMX8Q_HSIO_CFG_PCIEAX2PCIEB 0x2
+#define IMX8Q_HSIO_CFG_PCIEAPCIEBSATA (IMX8Q_HSIO_CFG_PCIEAX2SATA | IMX8Q_HSIO_CFG_PCIEAX2PCIEB)
+#define IMX8Q_HSIO_CFG_PCIEB IMX8Q_HSIO_CFG_PCIEAX2PCIEB
+
#endif /* _DT_BINDINGS_IMX8_PCIE_H */
--
2.37.1