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Message-Id: <20210917181551.2836036-1-f.fainelli@gmail.com>
Date: Fri, 17 Sep 2021 11:15:50 -0700
From: Florian Fainelli <f.fainelli@...il.com>
To: netdev@...r.kernel.org
Cc: Florian Fainelli <f.fainelli@...il.com>,
Andrew Lunn <andrew@...n.ch>,
Heiner Kallweit <hkallweit1@...il.com>,
Russell King <linux@...linux.org.uk>,
"David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
bcm-kernel-feedback-list@...adcom.com (open list:BROADCOM ETHERNET PHY
DRIVERS), linux-kernel@...r.kernel.org (open list)
Subject: [PATCH net-next v2] net: phy: bcm7xxx: Add EPHY entry for 72165
72165 is a 16nm process SoC with a 10/100 integrated Ethernet PHY,
create a new macro and set of functions for this different process type.
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
Changes in v2:
- Fixed checkpatch complaint on a comment
- intentionally kep the 0x3000 clearing and setting since this is
generated from a script
drivers/net/phy/bcm7xxx.c | 201 ++++++++++++++++++++++++++++++++++++++
include/linux/brcmphy.h | 1 +
2 files changed, 202 insertions(+)
diff --git a/drivers/net/phy/bcm7xxx.c b/drivers/net/phy/bcm7xxx.c
index e79297a4bae8..3a29a1493ff1 100644
--- a/drivers/net/phy/bcm7xxx.c
+++ b/drivers/net/phy/bcm7xxx.c
@@ -398,6 +398,190 @@ static int bcm7xxx_28nm_ephy_config_init(struct phy_device *phydev)
return bcm7xxx_28nm_ephy_apd_enable(phydev);
}
+static int bcm7xxx_16nm_ephy_afe_config(struct phy_device *phydev)
+{
+ int tmp, rcalcode, rcalnewcodelp, rcalnewcode11, rcalnewcode11d2;
+
+ /* Reset PHY */
+ tmp = genphy_soft_reset(phydev);
+ if (tmp)
+ return tmp;
+
+ /* Reset AFE and PLL */
+ bcm_phy_write_exp_sel(phydev, 0x0003, 0x0006);
+ /* Clear reset */
+ bcm_phy_write_exp_sel(phydev, 0x0003, 0x0000);
+
+ /* Write PLL/AFE control register to select 54MHz crystal */
+ bcm_phy_write_misc(phydev, 0x0030, 0x0001, 0x0000);
+ bcm_phy_write_misc(phydev, 0x0031, 0x0000, 0x044a);
+
+ /* Change Ka,Kp,Ki to pdiv=1 */
+ bcm_phy_write_misc(phydev, 0x0033, 0x0002, 0x71a1);
+ /* Configuration override */
+ bcm_phy_write_misc(phydev, 0x0033, 0x0001, 0x8000);
+
+ /* Change PLL_NDIV and PLL_NUDGE */
+ bcm_phy_write_misc(phydev, 0x0031, 0x0001, 0x2f68);
+ bcm_phy_write_misc(phydev, 0x0031, 0x0002, 0x0000);
+
+ /* Reference frequency is 54Mhz, config_mode[15:14] = 3 (low
+ * phase)
+ */
+ bcm_phy_write_misc(phydev, 0x0030, 0x0003, 0xc036);
+
+ /* Initialize bypass mode */
+ bcm_phy_write_misc(phydev, 0x0032, 0x0003, 0x0000);
+ /* Bypass code, default: VCOCLK enabled */
+ bcm_phy_write_misc(phydev, 0x0033, 0x0000, 0x0002);
+ /* LDOs at default setting */
+ bcm_phy_write_misc(phydev, 0x0030, 0x0002, 0x01c0);
+ /* Release PLL reset */
+ bcm_phy_write_misc(phydev, 0x0030, 0x0001, 0x0001);
+
+ /* Bandgap curvature correction to correct default */
+ bcm_phy_write_misc(phydev, 0x0038, 0x0000, 0x0010);
+
+ /* Run RCAL */
+ bcm_phy_write_misc(phydev, 0x0039, 0x0003, 0x0038);
+ bcm_phy_write_misc(phydev, 0x0039, 0x0003, 0x003b);
+ udelay(2);
+ bcm_phy_write_misc(phydev, 0x0039, 0x0003, 0x003f);
+ mdelay(5);
+
+ /* AFE_CAL_CONFIG_0, Vref=1000, Target=10, averaging enabled */
+ bcm_phy_write_misc(phydev, 0x0039, 0x0001, 0x1c82);
+ /* AFE_CAL_CONFIG_0, no reset and analog powerup */
+ bcm_phy_write_misc(phydev, 0x0039, 0x0001, 0x9e82);
+ udelay(2);
+ /* AFE_CAL_CONFIG_0, start calibration */
+ bcm_phy_write_misc(phydev, 0x0039, 0x0001, 0x9f82);
+ udelay(100);
+ /* AFE_CAL_CONFIG_0, clear start calibration, set HiBW */
+ bcm_phy_write_misc(phydev, 0x0039, 0x0001, 0x9e86);
+ udelay(2);
+ /* AFE_CAL_CONFIG_0, start calibration with hi BW mode set */
+ bcm_phy_write_misc(phydev, 0x0039, 0x0001, 0x9f86);
+ udelay(100);
+
+ /* Adjust 10BT amplitude additional +7% and 100BT +2% */
+ bcm_phy_write_misc(phydev, 0x0038, 0x0001, 0xe7ea);
+ /* Adjust 1G mode amplitude and 1G testmode1 */
+ bcm_phy_write_misc(phydev, 0x0038, 0x0002, 0xede0);
+
+ /* Read CORE_EXPA9 */
+ tmp = bcm_phy_read_exp(phydev, 0x00a9);
+ /* CORE_EXPA9[6:1] is rcalcode[5:0] */
+ rcalcode = (tmp & 0x7e) / 2;
+ /* Correct RCAL code + 1 is -1% rprogr, LP: +16 */
+ rcalnewcodelp = rcalcode + 16;
+ /* Correct RCAL code + 1 is -15 rprogr, 11: +10 */
+ rcalnewcode11 = rcalcode + 10;
+ /* Saturate if necessary */
+ if (rcalnewcodelp > 0x3f)
+ rcalnewcodelp = 0x3f;
+ if (rcalnewcode11 > 0x3f)
+ rcalnewcode11 = 0x3f;
+ /* REXT=1 BYP=1 RCAL_st1<5:0>=new rcal code */
+ tmp = 0x00f8 + rcalnewcodelp * 256;
+ /* Program into AFE_CAL_CONFIG_2 */
+ bcm_phy_write_misc(phydev, 0x0039, 0x0003, tmp);
+ /* AFE_BIAS_CONFIG_0 10BT bias code (Bias: E4) */
+ bcm_phy_write_misc(phydev, 0x0038, 0x0001, 0xe7e4);
+ /* invert adc clock output and 'adc refp ldo current To correct
+ * default
+ */
+ bcm_phy_write_misc(phydev, 0x003b, 0x0000, 0x8002);
+ /* 100BT stair case, high BW, 1G stair case, alternate encode */
+ bcm_phy_write_misc(phydev, 0x003c, 0x0003, 0xf882);
+ /* 1000BT DAC transition method per Erol, bits[32], DAC Shuffle
+ * sequence 1 + 10BT imp adjust bits
+ */
+ bcm_phy_write_misc(phydev, 0x003d, 0x0000, 0x3201);
+ /* Non-overlap fix */
+ bcm_phy_write_misc(phydev, 0x003a, 0x0002, 0x0c00);
+
+ /* pwdb override (rxconfig<5>) to turn on RX LDO indpendent of
+ * pwdb controls from DSP_TAP10
+ */
+ bcm_phy_write_misc(phydev, 0x003a, 0x0001, 0x0020);
+
+ /* Remove references to channel 2 and 3 */
+ bcm_phy_write_misc(phydev, 0x003b, 0x0002, 0x0000);
+ bcm_phy_write_misc(phydev, 0x003b, 0x0003, 0x0000);
+
+ /* Set cal_bypassb bit rxconfig<43> */
+ bcm_phy_write_misc(phydev, 0x003a, 0x0003, 0x0800);
+ udelay(2);
+
+ /* Revert pwdb_override (rxconfig<5>) to 0 so that the RX pwr
+ * is controlled by DSP.
+ */
+ bcm_phy_write_misc(phydev, 0x003a, 0x0001, 0x0000);
+
+ /* Drop LSB */
+ rcalnewcode11d2 = (rcalnewcode11 & 0xfffe) / 2;
+ tmp = bcm_phy_read_misc(phydev, 0x003d, 0x0001);
+ /* Clear bits [11:5] */
+ tmp &= ~0xfe0;
+ /* set txcfg_ch0<5>=1 (enable + set local rcal) */
+ tmp |= 0x0020 | (rcalnewcode11d2 * 64);
+ bcm_phy_write_misc(phydev, 0x003d, 0x0001, tmp);
+ bcm_phy_write_misc(phydev, 0x003d, 0x0002, tmp);
+
+ tmp = bcm_phy_read_misc(phydev, 0x003d, 0x0000);
+ /* set txcfg<45:44>=11 (enable Rextra + invert fullscaledetect)
+ */
+ tmp &= ~0x3000;
+ tmp |= 0x3000;
+ bcm_phy_write_misc(phydev, 0x003d, 0x0000, tmp);
+
+ return 0;
+}
+
+static int bcm7xxx_16nm_ephy_config_init(struct phy_device *phydev)
+{
+ int ret, val;
+
+ ret = bcm7xxx_16nm_ephy_afe_config(phydev);
+ if (ret)
+ return ret;
+
+ ret = bcm_phy_set_eee(phydev, true);
+ if (ret)
+ return ret;
+
+ ret = bcm_phy_read_shadow(phydev, BCM54XX_SHD_SCR3);
+ if (ret < 0)
+ return ret;
+
+ val = ret;
+
+ /* Auto power down of DLL enabled,
+ * TXC/RXC disabled during auto power down.
+ */
+ val &= ~BCM54XX_SHD_SCR3_DLLAPD_DIS;
+ val |= BIT(8);
+
+ ret = bcm_phy_write_shadow(phydev, BCM54XX_SHD_SCR3, val);
+ if (ret < 0)
+ return ret;
+
+ return bcm_phy_enable_apd(phydev, true);
+}
+
+static int bcm7xxx_16nm_ephy_resume(struct phy_device *phydev)
+{
+ int ret;
+
+ /* Re-apply workarounds coming out suspend/resume */
+ ret = bcm7xxx_16nm_ephy_config_init(phydev);
+ if (ret)
+ return ret;
+
+ return genphy_config_aneg(phydev);
+}
+
static int bcm7xxx_28nm_ephy_resume(struct phy_device *phydev)
{
int ret;
@@ -610,9 +794,25 @@ static void bcm7xxx_28nm_remove(struct phy_device *phydev)
.resume = bcm7xxx_config_init, \
}
+#define BCM7XXX_16NM_EPHY(_oui, _name) \
+{ \
+ .phy_id = (_oui), \
+ .phy_id_mask = 0xfffffff0, \
+ .name = _name, \
+ /* PHY_BASIC_FEATURES */ \
+ .flags = PHY_IS_INTERNAL, \
+ .probe = bcm7xxx_28nm_probe, \
+ .remove = bcm7xxx_28nm_remove, \
+ .config_init = bcm7xxx_16nm_ephy_config_init, \
+ .config_aneg = genphy_config_aneg, \
+ .read_status = genphy_read_status, \
+ .resume = bcm7xxx_16nm_ephy_resume, \
+}
+
static struct phy_driver bcm7xxx_driver[] = {
BCM7XXX_28NM_EPHY(PHY_ID_BCM72113, "Broadcom BCM72113"),
BCM7XXX_28NM_EPHY(PHY_ID_BCM72116, "Broadcom BCM72116"),
+ BCM7XXX_16NM_EPHY(PHY_ID_BCM72165, "Broadcom BCM72165"),
BCM7XXX_28NM_GPHY(PHY_ID_BCM7250, "Broadcom BCM7250"),
BCM7XXX_28NM_EPHY(PHY_ID_BCM7255, "Broadcom BCM7255"),
BCM7XXX_28NM_EPHY(PHY_ID_BCM7260, "Broadcom BCM7260"),
@@ -635,6 +835,7 @@ static struct phy_driver bcm7xxx_driver[] = {
static struct mdio_device_id __maybe_unused bcm7xxx_tbl[] = {
{ PHY_ID_BCM72113, 0xfffffff0 },
{ PHY_ID_BCM72116, 0xfffffff0, },
+ { PHY_ID_BCM72165, 0xfffffff0, },
{ PHY_ID_BCM7250, 0xfffffff0, },
{ PHY_ID_BCM7255, 0xfffffff0, },
{ PHY_ID_BCM7260, 0xfffffff0, },
diff --git a/include/linux/brcmphy.h b/include/linux/brcmphy.h
index 3308cebe1c19..07e1dfadbbdf 100644
--- a/include/linux/brcmphy.h
+++ b/include/linux/brcmphy.h
@@ -32,6 +32,7 @@
#define PHY_ID_BCM72113 0x35905310
#define PHY_ID_BCM72116 0x35905350
+#define PHY_ID_BCM72165 0x35905340
#define PHY_ID_BCM7250 0xae025280
#define PHY_ID_BCM7255 0xae025120
#define PHY_ID_BCM7260 0xae025190
--
2.25.1
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