[PATCH v1 2/3] dt-bindings: phy: phy-imx8-pcie: Add binding for i.MX8Q HSIO SerDes PHY

From: Richard Zhu <hongxing.zhu@nxp.com>
To: vkoul@kernel.org, kishon@kernel.org, robh+dt@kernel.org,
	krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org,
	frank.li@nxp.com
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,
	linux-imx@nxp.com
Subject: [PATCH v1 2/3] dt-bindings: phy: phy-imx8-pcie: Add binding for i.MX8Q HSIO SerDes PHY
Date: Fri, 29 Mar 2024 16:09:49 +0800	[thread overview]
Message-ID: <1711699790-16494-3-git-send-email-hongxing.zhu@nxp.com> (raw)
In-Reply-To: <1711699790-16494-1-git-send-email-hongxing.zhu@nxp.com>

Add binding for controller ID and HSIO configuration setting of the
i.MX8Q HSIO SerDes PHY.

Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
---
 include/dt-bindings/phy/phy-imx8-pcie.h | 26 +++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/include/dt-bindings/phy/phy-imx8-pcie.h b/include/dt-bindings/phy/phy-imx8-pcie.h
index 8bbe2d6538d8..5cd5580879fa 100644
--- a/include/dt-bindings/phy/phy-imx8-pcie.h
+++ b/include/dt-bindings/phy/phy-imx8-pcie.h
@@ -11,4 +11,30 @@
 #define IMX8_PCIE_REFCLK_PAD_INPUT	1
 #define IMX8_PCIE_REFCLK_PAD_OUTPUT	2
 
+/*
+ * i.MX8QM HSIO subsystem has three lane PHYs and three controllers:
+ * PCIEA(2 lanes capapble PCIe controller), PCIEB (only support one
+ * lane) and SATA.
+ * In the different use cases. PCIEA can be binded to PHY lane0, lane1
+ * or Lane0 and lane1. PCIEB can be binded to lane1 or lane2 PHY. SATA
+ * can only be binded to last lane2 PHY.
+ * Define i.MX8Q HSIO controller ID here to specify the controller
+ * binded to the PHY.
+ * Meanwhile, i.MX8QXP HSIO subsystem has one lane PHY and PCIEB(only
+ * support one lane) controller.
+ */
+#define IMX8Q_HSIO_PCIEA_ID	0
+#define IMX8Q_HSIO_PCIEB_ID	1
+#define IMX8Q_HSIO_SATA_ID	2
+
+/*
+ * On i.MX8QM, PCIEA is mandatory required if the HSIO is enabled.
+ * Define configurations beside PCIEA is enabled.
+ * On i.MX8QXP, HSIO module only has PCIEB and one lane PHY.
+ * The "IMX8Q_HSIO_CFG_PCIEB" can be used on i.MX8QXP platforms.
+ */
+#define IMX8Q_HSIO_CFG_SATA		1
+#define IMX8Q_HSIO_CFG_PCIEB		2
+#define IMX8Q_HSIO_CFG_PCIEBSATA	3
+
 #endif /* _DT_BINDINGS_IMX8_PCIE_H */
-- 
2.37.1

