From: Matthias Kaehlcke <mka@chromium.org>
To: "David S . Miller" <davem@davemloft.net>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>, Andrew Lunn <andrew@lunn.ch>,
Florian Fainelli <f.fainelli@gmail.com>,
Heiner Kallweit <hkallweit1@gmail.com>
Cc: netdev@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
Douglas Anderson <dianders@chromium.org>,
Matthias Kaehlcke <mka@chromium.org>
Subject: [PATCH v2 5/7] net: phy: realtek: Support SSC for the RTL8211E
Date: Wed, 3 Jul 2019 12:37:22 -0700 [thread overview]
Message-ID: <20190703193724.246854-5-mka@chromium.org> (raw)
In-Reply-To: <20190703193724.246854-1-mka@chromium.org>
By default Spread-Spectrum Clocking (SSC) is disabled on the RTL8211E.
Enable it if the device tree property 'realtek,enable-ssc' exists.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
---
Changes in v2:
- enable SSC in config_init() instead of probe()
- fixed error check after enabling SSC
---
drivers/net/phy/realtek.c | 18 ++++++++++++++++--
1 file changed, 16 insertions(+), 2 deletions(-)
diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c
index 9cd6241e2a6d..45fee4612031 100644
--- a/drivers/net/phy/realtek.c
+++ b/drivers/net/phy/realtek.c
@@ -9,6 +9,7 @@
* Copyright (c) 2004 Freescale Semiconductor, Inc.
*/
#include <linux/bitops.h>
+#include <linux/device.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/phy.h>
@@ -34,6 +35,10 @@
#define RTL8211E_EEE_LED_MODE1 0x05
#define RTL8211E_EEE_LED_MODE2 0x06
+/* RTL8211E extension page 160 */
+#define RTL8211E_SCR 0x1a
+#define RTL8211E_SCR_DISABLE_RXC_SSC BIT(2)
+
#define RTL8211F_INSR 0x1d
#define RTL8211F_TX_DELAY BIT(8)
@@ -76,8 +81,8 @@ static int rtl8211e_select_ext_page(struct phy_device *phydev, int page)
return 0;
}
-static int __maybe_unused rtl8211e_modify_ext_paged(struct phy_device *phydev,
- int page, u32 regnum, u16 mask, u16 set)
+static int rtl8211e_modify_ext_paged(struct phy_device *phydev, int page,
+ u32 regnum, u16 mask, u16 set)
{
int ret = 0;
int oldpage;
@@ -122,6 +127,15 @@ static int rtl8211e_disable_eee_led_mode(struct phy_device *phydev)
static int rtl8211e_config_init(struct phy_device *phydev)
{
struct device *dev = &phydev->mdio.dev;
+ int ret;
+
+ if (of_property_read_bool(dev->of_node, "realtek,enable-ssc")) {
+ ret = rtl8211e_modify_ext_paged(phydev, 0xa0, RTL8211E_SCR,
+ RTL8211E_SCR_DISABLE_RXC_SSC,
+ 0);
+ if (ret < 0)
+ dev_err(dev, "failed to enable SSC on RXC: %d\n", ret);
+ }
if (of_property_read_bool(dev->of_node, "realtek,eee-led-mode-disable"))
rtl8211e_disable_eee_led_mode(phydev);
--
2.22.0.410.gd8fdbe21b5-goog
next prev parent reply other threads:[~2019-07-03 19:37 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-03 19:37 [PATCH v2 1/7] dt-bindings: net: Add bindings for Realtek PHYs Matthias Kaehlcke
2019-07-03 19:37 ` [PATCH v2 2/7] net: phy: realtek: Allow disabling RTL8211E EEE LED mode Matthias Kaehlcke
2019-07-03 20:09 ` Heiner Kallweit
2019-07-03 20:32 ` Matthias Kaehlcke
2019-07-03 19:37 ` [PATCH v2 3/7] dt-bindings: net: realtek: Add property to enable SSC Matthias Kaehlcke
2019-07-03 19:37 ` [PATCH v2 4/7] net: phy: realtek: Enable accessing RTL8211E extension pages Matthias Kaehlcke
2019-07-03 20:12 ` Heiner Kallweit
2019-07-03 20:36 ` Matthias Kaehlcke
2019-07-03 21:01 ` Heiner Kallweit
2019-07-03 21:24 ` Matthias Kaehlcke
2019-07-03 21:27 ` Heiner Kallweit
2019-07-03 22:56 ` Matthias Kaehlcke
2019-07-03 19:37 ` Matthias Kaehlcke [this message]
2019-07-03 19:37 ` [PATCH v2 6/7] dt-bindings: net: realtek: Add property to configure LED mode Matthias Kaehlcke
2019-07-03 20:07 ` Andrew Lunn
2019-07-03 20:13 ` Heiner Kallweit
2019-07-03 20:22 ` Heiner Kallweit
2019-07-03 21:37 ` Florian Fainelli
2019-07-03 23:23 ` Matthias Kaehlcke
2019-07-10 15:55 ` Rob Herring
2019-07-10 16:28 ` Florian Fainelli
2019-07-12 17:28 ` Matthias Kaehlcke
2019-07-12 17:20 ` Matthias Kaehlcke
2019-07-22 17:14 ` Matthias Kaehlcke
2019-07-22 19:01 ` Andrew Lunn
2019-07-22 19:14 ` Matthias Kaehlcke
2019-07-22 19:38 ` Andrew Lunn
2019-07-03 19:37 ` [PATCH v2 7/7] net: phy: realtek: configure RTL8211E LEDs Matthias Kaehlcke
2019-07-03 20:10 ` Andrew Lunn
2019-07-03 20:43 ` Matthias Kaehlcke
2019-07-03 20:28 ` Heiner Kallweit
2019-07-03 20:45 ` Matthias Kaehlcke
2019-07-03 20:21 ` [PATCH v2 1/7] dt-bindings: net: Add bindings for Realtek PHYs David Miller
2019-07-03 21:11 ` Rob Herring
2019-07-03 21:33 ` Andrew Lunn
2019-07-03 22:08 ` Matthias Kaehlcke
2019-07-05 16:18 ` Rob Herring
2019-07-05 16:17 ` Rob Herring
2019-07-05 16:29 ` Andrew Lunn
2019-07-05 17:07 ` Rob Herring
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