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Date: Mon, 28 Feb 2022 19:35:08 +0530
From: Arun Ramadoss <arun.ramadoss@...rochip.com>
To: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: Andrew Lunn <andrew@...n.ch>,
Heiner Kallweit <hkallweit1@...il.com>,
Russell King <linux@...linux.org.uk>,
Jakub Kicinski <kuba@...nel.org>,
"David S . Miller" <davem@...emloft.net>
Subject: [RFC PATCH net-next 2/4] net: phy: updated the initialization routine for LAN87xx
The new initialization sequence is the improvement to the existing init
routine. Init routine does soft reset, run init script and set
Hw_init. Added the new access_ereg_clr_poll_timeout() for polling phy
bank write.
Signed-off-by: Prasanna Vengateshan <prasanna.vengateshan@...rochip.com>
Signed-off-by: Arun Ramadoss <arun.ramadoss@...rochip.com>
---
drivers/net/phy/microchip_t1.c | 219 ++++++++++++++++++++++++++-------
1 file changed, 177 insertions(+), 42 deletions(-)
diff --git a/drivers/net/phy/microchip_t1.c b/drivers/net/phy/microchip_t1.c
index ece21c1e5716..33325e5bd884 100644
--- a/drivers/net/phy/microchip_t1.c
+++ b/drivers/net/phy/microchip_t1.c
@@ -40,6 +40,7 @@
#define PHYACC_ATTR_MODE_READ 0
#define PHYACC_ATTR_MODE_WRITE 1
#define PHYACC_ATTR_MODE_MODIFY 2
+#define PHYACC_ATTR_MODE_POLL 3
#define PHYACC_ATTR_BANK_SMI 0
#define PHYACC_ATTR_BANK_MISC 1
@@ -53,6 +54,28 @@
#define LAN87XX_CABLE_TEST_OPEN 1
#define LAN87XX_CABLE_TEST_SAME_SHORT 2
+/* T1 Registers */
+#define T1_AFE_PORT_CFG1_REG 0x0B
+#define T1_POWER_DOWN_CONTROL_REG 0x1A
+#define T1_SLV_FD_MULT_CFG_REG 0x18
+#define T1_CDR_CFG_PRE_LOCK_REG 0x05
+#define T1_CDR_CFG_POST_LOCK_REG 0x06
+#define T1_LCK_STG2_MUFACT_CFG_REG 0x1A
+#define T1_LCK_STG3_MUFACT_CFG_REG 0x1B
+#define T1_POST_LCK_MUFACT_CFG_REG 0x1C
+#define T1_TX_RX_FIFO_CFG_REG 0x02
+#define T1_TX_LPF_FIR_CFG_REG 0x55
+#define T1_SQI_CONFIG_REG 0x2E
+#define T1_MDIO_CONTROL2_REG 0x10
+#define T1_INTERRUPT_SOURCE_REG 0x18
+#define T1_INTERRUPT2_SOURCE_REG 0x08
+#define T1_EQ_FD_STG1_FRZ_CFG 0x69
+#define T1_EQ_FD_STG2_FRZ_CFG 0x6A
+#define T1_EQ_FD_STG3_FRZ_CFG 0x6B
+#define T1_EQ_FD_STG4_FRZ_CFG 0x6C
+#define T1_EQ_WT_FD_LCK_FRZ_CFG 0x6D
+#define T1_PST_EQ_LCK_STG1_FRZ_CFG 0x6E
+
#define DRIVER_AUTHOR "Nisar Sayed <nisar.sayed@...rochip.com>"
#define DRIVER_DESC "Microchip LAN87XX T1 PHY driver"
@@ -120,6 +143,18 @@ static int access_ereg_modify_changed(struct phy_device *phydev,
return rc;
}
+static int access_ereg_clr_poll_timeout(struct phy_device *phydev, u8 bank,
+ u8 offset, u16 mask, u16 clr)
+{
+ int val;
+
+ if (bank != PHYACC_ATTR_BANK_SMI)
+ return -EINVAL;
+
+ return phy_read_poll_timeout(phydev, offset, val, (val & mask) == clr,
+ 150, 30000, true);
+}
+
static int lan87xx_config_rgmii_delay(struct phy_device *phydev)
{
int rc;
@@ -160,46 +195,146 @@ static int lan87xx_config_rgmii_delay(struct phy_device *phydev)
static int lan87xx_phy_init(struct phy_device *phydev)
{
static const struct access_ereg_val init[] = {
- /* TX Amplitude = 5 */
- {PHYACC_ATTR_MODE_MODIFY, PHYACC_ATTR_BANK_AFE, 0x0B,
- 0x000A, 0x001E},
- /* Clear SMI interrupts */
- {PHYACC_ATTR_MODE_READ, PHYACC_ATTR_BANK_SMI, 0x18,
- 0, 0},
- /* Clear MISC interrupts */
- {PHYACC_ATTR_MODE_READ, PHYACC_ATTR_BANK_MISC, 0x08,
- 0, 0},
- /* Turn on TC10 Ring Oscillator (ROSC) */
- {PHYACC_ATTR_MODE_MODIFY, PHYACC_ATTR_BANK_MISC, 0x20,
- 0x0020, 0x0020},
- /* WUR Detect Length to 1.2uS, LPC Detect Length to 1.09uS */
- {PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_PCS, 0x20,
- 0x283C, 0},
- /* Wake_In Debounce Length to 39uS, Wake_Out Length to 79uS */
- {PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_MISC, 0x21,
- 0x274F, 0},
- /* Enable Auto Wake Forward to Wake_Out, ROSC on, Sleep,
- * and Wake_In to wake PHY
- */
- {PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_MISC, 0x20,
- 0x80A7, 0},
- /* Enable WUP Auto Fwd, Enable Wake on MDI, Wakeup Debouncer
- * to 128 uS
- */
- {PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_MISC, 0x24,
- 0xF110, 0},
- /* Enable HW Init */
- {PHYACC_ATTR_MODE_MODIFY, PHYACC_ATTR_BANK_SMI, 0x1A,
- 0x0100, 0x0100},
+ /* TXPD/TXAMP6 Configs */
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_AFE,
+ T1_AFE_PORT_CFG1_REG, 0x002D, 0 },
+ /* HW_Init Hi and Force_ED */
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_SMI,
+ T1_POWER_DOWN_CONTROL_REG, 0x0308, 0 },
+ /* Equalizer Full Duplex Freeze - T1 Slave */
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_EQ_FD_STG1_FRZ_CFG, 0x0002, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_EQ_FD_STG2_FRZ_CFG, 0x0002, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_EQ_FD_STG3_FRZ_CFG, 0x0002, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_EQ_FD_STG4_FRZ_CFG, 0x0002, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_EQ_WT_FD_LCK_FRZ_CFG, 0x0002, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_PST_EQ_LCK_STG1_FRZ_CFG, 0x0002, 0 },
+ /* Slave Full Duplex Multi Configs */
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_SLV_FD_MULT_CFG_REG, 0x0D53, 0 },
+ /* CDR Pre and Post Lock Configs */
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_CDR_CFG_PRE_LOCK_REG, 0x0AB2, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_CDR_CFG_POST_LOCK_REG, 0x0AB3, 0 },
+ /* Lock Stage 2-3 Multi Factor Config */
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_LCK_STG2_MUFACT_CFG_REG, 0x0AEA, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_LCK_STG3_MUFACT_CFG_REG, 0x0AEB, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_POST_LCK_MUFACT_CFG_REG, 0x0AEB, 0 },
+ /* Pointer delay */
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_RX_FIFO_CFG_REG, 0x1C00, 0 },
+ /* Tx iir edits */
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x1000, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x1861, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x1061, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x1922, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x1122, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x1983, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x1183, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x1944, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x1144, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x18c5, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x10c5, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x1846, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x1046, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x1807, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x1007, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x1808, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x1008, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x1809, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x1009, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x180A, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x100A, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x180B, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x100B, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x180C, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x100C, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x180D, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x100D, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x180E, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x100E, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x180F, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x100F, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x1810, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x1010, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x1811, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x1011, 0 },
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_TX_LPF_FIR_CFG_REG, 0x1000, 0 },
+ /* SQI enable */
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_DSP,
+ T1_SQI_CONFIG_REG, 0x9572, 0 },
+ /* Flag LPS and WUR as idle errors */
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_SMI,
+ T1_MDIO_CONTROL2_REG, 0x0014, 0 },
+ /* HW_Init toggle, undo force ED, TXPD off */
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_SMI,
+ T1_POWER_DOWN_CONTROL_REG, 0x0200, 0 },
+ /* Reset PCS to trigger hardware initialization */
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_SMI,
+ T1_MDIO_CONTROL2_REG, 0x0094, 0 },
+ /* Poll till Hardware is initialized */
+ { PHYACC_ATTR_MODE_POLL, PHYACC_ATTR_BANK_SMI,
+ T1_MDIO_CONTROL2_REG, 0x0080, 0 },
+ /* Tx AMP - 0x06 */
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_AFE,
+ T1_AFE_PORT_CFG1_REG, 0x000C, 0 },
+ /* Read INTERRUPT_SOURCE Register */
+ { PHYACC_ATTR_MODE_READ, PHYACC_ATTR_BANK_SMI,
+ T1_INTERRUPT_SOURCE_REG, 0, 0 },
+ /* Read INTERRUPT_SOURCE Register */
+ { PHYACC_ATTR_MODE_READ, PHYACC_ATTR_BANK_MISC,
+ T1_INTERRUPT2_SOURCE_REG, 0, 0 },
+ /* HW_Init Hi */
+ { PHYACC_ATTR_MODE_WRITE, PHYACC_ATTR_BANK_SMI,
+ T1_POWER_DOWN_CONTROL_REG, 0x0300, 0 },
};
int rc, i;
- /* Start manual initialization procedures in Managed Mode */
- rc = access_ereg_modify_changed(phydev, PHYACC_ATTR_BANK_SMI,
- 0x1a, 0x0000, 0x0100);
- if (rc < 0)
- return rc;
-
/* phy Soft reset */
rc = genphy_soft_reset(phydev);
if (rc < 0)
@@ -207,11 +342,11 @@ static int lan87xx_phy_init(struct phy_device *phydev)
/* PHY Initialization */
for (i = 0; i < ARRAY_SIZE(init); i++) {
- if (init[i].mode == PHYACC_ATTR_MODE_MODIFY) {
- rc = access_ereg_modify_changed(phydev, init[i].bank,
- init[i].offset,
- init[i].val,
- init[i].mask);
+ if (init[i].mode == PHYACC_ATTR_MODE_POLL) {
+ rc = access_ereg_clr_poll_timeout(phydev, init[i].bank,
+ init[i].offset,
+ init[i].val,
+ init[i].mask);
} else {
rc = access_ereg(phydev, init[i].mode, init[i].bank,
init[i].offset, init[i].val);
--
2.33.0
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