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From: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
To: Kishon Vijay Abraham I <kishon@ti.com>, Vinod Koul <vkoul@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>,
	Ryuta NAKANISHI <nakanishi.ryuta@socionext.com>,
	linux-phy@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Subject: [PATCH] phy: uniphier-usb3ss: fix unintended writing zeros to PHY register
Date: Wed, 22 Dec 2021 14:19:29 +0900	[thread overview]
Message-ID: <1640150369-4134-1-git-send-email-hayashi.kunihiko@socionext.com> (raw)

From: Ryuta NAKANISHI <nakanishi.ryuta@socionext.com>

Similar to commit 4a90bbb478db ("phy: uniphier-pcie: Fix updating phy
parameters"), in function uniphier_u3ssphy_set_param(), unintentionally
write zeros to other fields when writing PHY registers.

Fixes: 5ab43d0f8697 ("phy: socionext: add USB3 PHY driver for UniPhier SoC")
Signed-off-by: Ryuta NAKANISHI <nakanishi.ryuta@socionext.com>
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
---
 drivers/phy/socionext/phy-uniphier-usb3ss.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/phy/socionext/phy-uniphier-usb3ss.c b/drivers/phy/socionext/phy-uniphier-usb3ss.c
index 7ce611c2088b..f402ed8732fd 100644
--- a/drivers/phy/socionext/phy-uniphier-usb3ss.c
+++ b/drivers/phy/socionext/phy-uniphier-usb3ss.c
@@ -22,11 +22,13 @@
 #include <linux/reset.h>
 
 #define SSPHY_TESTI		0x0
-#define SSPHY_TESTO		0x4
 #define TESTI_DAT_MASK		GENMASK(13, 6)
 #define TESTI_ADR_MASK		GENMASK(5, 1)
 #define TESTI_WR_EN		BIT(0)
 
+#define SSPHY_TESTO		0x4
+#define TESTO_DAT_MASK		GENMASK(7, 0)
+
 #define PHY_F(regno, msb, lsb) { (regno), (msb), (lsb) }
 
 #define CDR_CPD_TRIM	PHY_F(7, 3, 0)	/* RxPLL charge pump current */
@@ -84,12 +86,12 @@ static void uniphier_u3ssphy_set_param(struct uniphier_u3ssphy_priv *priv,
 	val  = FIELD_PREP(TESTI_DAT_MASK, 1);
 	val |= FIELD_PREP(TESTI_ADR_MASK, p->field.reg_no);
 	uniphier_u3ssphy_testio_write(priv, val);
-	val = readl(priv->base + SSPHY_TESTO);
+	val = readl(priv->base + SSPHY_TESTO) & TESTO_DAT_MASK;
 
 	/* update value */
-	val &= ~FIELD_PREP(TESTI_DAT_MASK, field_mask);
+	val &= ~field_mask;
 	data = field_mask & (p->value << p->field.lsb);
-	val  = FIELD_PREP(TESTI_DAT_MASK, data);
+	val  = FIELD_PREP(TESTI_DAT_MASK, data | val);
 	val |= FIELD_PREP(TESTI_ADR_MASK, p->field.reg_no);
 	uniphier_u3ssphy_testio_write(priv, val);
 	uniphier_u3ssphy_testio_write(priv, val | TESTI_WR_EN);
-- 
2.7.4


WARNING: multiple messages have this Message-ID (diff)
From: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
To: Kishon Vijay Abraham I <kishon@ti.com>, Vinod Koul <vkoul@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>,
	Ryuta NAKANISHI <nakanishi.ryuta@socionext.com>,
	linux-phy@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Subject: [PATCH] phy: uniphier-usb3ss: fix unintended writing zeros to PHY register
Date: Wed, 22 Dec 2021 14:19:29 +0900	[thread overview]
Message-ID: <1640150369-4134-1-git-send-email-hayashi.kunihiko@socionext.com> (raw)

From: Ryuta NAKANISHI <nakanishi.ryuta@socionext.com>

Similar to commit 4a90bbb478db ("phy: uniphier-pcie: Fix updating phy
parameters"), in function uniphier_u3ssphy_set_param(), unintentionally
write zeros to other fields when writing PHY registers.

Fixes: 5ab43d0f8697 ("phy: socionext: add USB3 PHY driver for UniPhier SoC")
Signed-off-by: Ryuta NAKANISHI <nakanishi.ryuta@socionext.com>
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
---
 drivers/phy/socionext/phy-uniphier-usb3ss.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/phy/socionext/phy-uniphier-usb3ss.c b/drivers/phy/socionext/phy-uniphier-usb3ss.c
index 7ce611c2088b..f402ed8732fd 100644
--- a/drivers/phy/socionext/phy-uniphier-usb3ss.c
+++ b/drivers/phy/socionext/phy-uniphier-usb3ss.c
@@ -22,11 +22,13 @@
 #include <linux/reset.h>
 
 #define SSPHY_TESTI		0x0
-#define SSPHY_TESTO		0x4
 #define TESTI_DAT_MASK		GENMASK(13, 6)
 #define TESTI_ADR_MASK		GENMASK(5, 1)
 #define TESTI_WR_EN		BIT(0)
 
+#define SSPHY_TESTO		0x4
+#define TESTO_DAT_MASK		GENMASK(7, 0)
+
 #define PHY_F(regno, msb, lsb) { (regno), (msb), (lsb) }
 
 #define CDR_CPD_TRIM	PHY_F(7, 3, 0)	/* RxPLL charge pump current */
@@ -84,12 +86,12 @@ static void uniphier_u3ssphy_set_param(struct uniphier_u3ssphy_priv *priv,
 	val  = FIELD_PREP(TESTI_DAT_MASK, 1);
 	val |= FIELD_PREP(TESTI_ADR_MASK, p->field.reg_no);
 	uniphier_u3ssphy_testio_write(priv, val);
-	val = readl(priv->base + SSPHY_TESTO);
+	val = readl(priv->base + SSPHY_TESTO) & TESTO_DAT_MASK;
 
 	/* update value */
-	val &= ~FIELD_PREP(TESTI_DAT_MASK, field_mask);
+	val &= ~field_mask;
 	data = field_mask & (p->value << p->field.lsb);
-	val  = FIELD_PREP(TESTI_DAT_MASK, data);
+	val  = FIELD_PREP(TESTI_DAT_MASK, data | val);
 	val |= FIELD_PREP(TESTI_ADR_MASK, p->field.reg_no);
 	uniphier_u3ssphy_testio_write(priv, val);
 	uniphier_u3ssphy_testio_write(priv, val | TESTI_WR_EN);
-- 
2.7.4


-- 
linux-phy mailing list
linux-phy@lists.infradead.org
https://lists.infradead.org/mailman/listinfo/linux-phy

WARNING: multiple messages have this Message-ID (diff)
From: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
To: Kishon Vijay Abraham I <kishon@ti.com>, Vinod Koul <vkoul@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>,
	Ryuta NAKANISHI <nakanishi.ryuta@socionext.com>,
	linux-phy@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Subject: [PATCH] phy: uniphier-usb3ss: fix unintended writing zeros to PHY register
Date: Wed, 22 Dec 2021 14:19:29 +0900	[thread overview]
Message-ID: <1640150369-4134-1-git-send-email-hayashi.kunihiko@socionext.com> (raw)

From: Ryuta NAKANISHI <nakanishi.ryuta@socionext.com>

Similar to commit 4a90bbb478db ("phy: uniphier-pcie: Fix updating phy
parameters"), in function uniphier_u3ssphy_set_param(), unintentionally
write zeros to other fields when writing PHY registers.

Fixes: 5ab43d0f8697 ("phy: socionext: add USB3 PHY driver for UniPhier SoC")
Signed-off-by: Ryuta NAKANISHI <nakanishi.ryuta@socionext.com>
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
---
 drivers/phy/socionext/phy-uniphier-usb3ss.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/phy/socionext/phy-uniphier-usb3ss.c b/drivers/phy/socionext/phy-uniphier-usb3ss.c
index 7ce611c2088b..f402ed8732fd 100644
--- a/drivers/phy/socionext/phy-uniphier-usb3ss.c
+++ b/drivers/phy/socionext/phy-uniphier-usb3ss.c
@@ -22,11 +22,13 @@
 #include <linux/reset.h>
 
 #define SSPHY_TESTI		0x0
-#define SSPHY_TESTO		0x4
 #define TESTI_DAT_MASK		GENMASK(13, 6)
 #define TESTI_ADR_MASK		GENMASK(5, 1)
 #define TESTI_WR_EN		BIT(0)
 
+#define SSPHY_TESTO		0x4
+#define TESTO_DAT_MASK		GENMASK(7, 0)
+
 #define PHY_F(regno, msb, lsb) { (regno), (msb), (lsb) }
 
 #define CDR_CPD_TRIM	PHY_F(7, 3, 0)	/* RxPLL charge pump current */
@@ -84,12 +86,12 @@ static void uniphier_u3ssphy_set_param(struct uniphier_u3ssphy_priv *priv,
 	val  = FIELD_PREP(TESTI_DAT_MASK, 1);
 	val |= FIELD_PREP(TESTI_ADR_MASK, p->field.reg_no);
 	uniphier_u3ssphy_testio_write(priv, val);
-	val = readl(priv->base + SSPHY_TESTO);
+	val = readl(priv->base + SSPHY_TESTO) & TESTO_DAT_MASK;
 
 	/* update value */
-	val &= ~FIELD_PREP(TESTI_DAT_MASK, field_mask);
+	val &= ~field_mask;
 	data = field_mask & (p->value << p->field.lsb);
-	val  = FIELD_PREP(TESTI_DAT_MASK, data);
+	val  = FIELD_PREP(TESTI_DAT_MASK, data | val);
 	val |= FIELD_PREP(TESTI_ADR_MASK, p->field.reg_no);
 	uniphier_u3ssphy_testio_write(priv, val);
 	uniphier_u3ssphy_testio_write(priv, val | TESTI_WR_EN);
-- 
2.7.4


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

             reply	other threads:[~2021-12-22  5:19 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-22  5:19 Kunihiko Hayashi [this message]
2021-12-22  5:19 ` [PATCH] phy: uniphier-usb3ss: fix unintended writing zeros to PHY register Kunihiko Hayashi
2021-12-22  5:19 ` Kunihiko Hayashi
2021-12-23 12:46 ` Vinod Koul
2021-12-23 12:46   ` Vinod Koul
2021-12-23 12:46   ` Vinod Koul

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