linux-kernel - [PATCH] phy: hisilicon: Adopt phy-hisi-inno-usb2 to ARM

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Date:   Thu, 16 Feb 2023 09:37:13 +0800
From:   David Yang <mmyangfl@...il.com>
To:     mmyangfl@...il.com
Cc:     Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        linux-phy@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] phy: hisilicon: Adopt phy-hisi-inno-usb2 to ARM

Hisilicon also uses phy-hisi-inno-usb2 on some ARM32-only SoCs (for
example, Hi3798), with a slightly different register convention.

Signed-off-by: David Yang <mmyangfl@...il.com>
---
 drivers/phy/hisilicon/Kconfig              |  2 +-
 drivers/phy/hisilicon/phy-hisi-inno-usb2.c | 16 ++++++++++++++--
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/drivers/phy/hisilicon/Kconfig b/drivers/phy/hisilicon/Kconfig
index d3b92c288..6c89136fc 100644
--- a/drivers/phy/hisilicon/Kconfig
+++ b/drivers/phy/hisilicon/Kconfig
@@ -54,7 +54,7 @@ config PHY_HISTB_COMBPHY
 
 config PHY_HISI_INNO_USB2
 	tristate "HiSilicon INNO USB2 PHY support"
-	depends on (ARCH_HISI && ARM64) || COMPILE_TEST
+	depends on ARCH_HISI || COMPILE_TEST
 	select GENERIC_PHY
 	select MFD_SYSCON
 	help
diff --git a/drivers/phy/hisilicon/phy-hisi-inno-usb2.c b/drivers/phy/hisilicon/phy-hisi-inno-usb2.c
index b133ae067..624899536 100644
--- a/drivers/phy/hisilicon/phy-hisi-inno-usb2.c
+++ b/drivers/phy/hisilicon/phy-hisi-inno-usb2.c
@@ -20,12 +20,24 @@
 #define PHY_CLK_STABLE_TIME	2	/* unit:ms */
 #define UTMI_RST_COMPLETE_TIME	2	/* unit:ms */
 #define POR_RST_COMPLETE_TIME	300	/* unit:us */
+
 #define PHY_TEST_DATA		GENMASK(7, 0)
+#define PHY_TEST_ADDR_OFFSET	8
+#ifdef CONFIG_ARM64
 #define PHY_TEST_ADDR		GENMASK(15, 8)
+#define PHY_TEST_PORT_OFFSET	16
 #define PHY_TEST_PORT		GENMASK(18, 16)
 #define PHY_TEST_WREN		BIT(21)
 #define PHY_TEST_CLK		BIT(22)	/* rising edge active */
 #define PHY_TEST_RST		BIT(23)	/* low active */
+#else
+#define PHY_TEST_ADDR		GENMASK(11, 8)
+#define PHY_TEST_PORT_OFFSET	12
+#define PHY_TEST_PORT		BIT(12)
+#define PHY_TEST_WREN		BIT(13)
+#define PHY_TEST_CLK		BIT(14)	/* rising edge active */
+#define PHY_TEST_RST		BIT(15)	/* low active */
+#endif
 #define PHY_CLK_ENABLE		BIT(2)
 
 struct hisi_inno_phy_port {
@@ -47,8 +59,8 @@ static void hisi_inno_phy_write_reg(struct hisi_inno_phy_priv *priv,
 	u32 val;
 
 	val = (data & PHY_TEST_DATA) |
-	      ((addr << 8) & PHY_TEST_ADDR) |
-	      ((port << 16) & PHY_TEST_PORT) |
+	      ((addr << PHY_TEST_ADDR_OFFSET) & PHY_TEST_ADDR) |
+	      ((port << PHY_TEST_PORT_OFFSET) & PHY_TEST_PORT) |
 	      PHY_TEST_WREN | PHY_TEST_RST;
 	writel(val, reg);
 
-- 
2.39.1