diff mbox series

[net-next,v3,5/7] net: phy: microchip_t1s: add support for Microchip's LAN867X Rev.C1

Message ID 20241001123734.1667581-6-parthiban.veerasooran@microchip.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series microchip_t1s: Update on Microchip 10BASE-T1S PHY driver | expand

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Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 9 this patch: 9
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 7 of 7 maintainers
netdev/build_clang success Errors and warnings before: 10 this patch: 10
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn fail Errors and warnings before: 12 this patch: 12
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 104 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Parthiban Veerasooran Oct. 1, 2024, 12:37 p.m. UTC 
Add support for LAN8670/1/2 Rev.C1 as per the latest configuration note
AN1699 released (Revision E (DS60001699F - June 2024)).
https://www.microchip.com/en-us/application-notes/an1699

Signed-off-by: Parthiban Veerasooran <parthiban.veerasooran@microchip.com>
---
 drivers/net/phy/Kconfig         |  2 +-
 drivers/net/phy/microchip_t1s.c | 66 ++++++++++++++++++++++++++++++++-
 2 files changed, 66 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index f18defab70cf..04f605606a8a 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -292,7 +292,7 @@  config MICREL_PHY
 config MICROCHIP_T1S_PHY
 	tristate "Microchip 10BASE-T1S Ethernet PHYs"
 	help
-	  Currently supports the LAN8670/1/2 Rev.B1 and LAN8650/1 Rev.B0/B1
+	  Currently supports the LAN8670/1/2 Rev.B1/C1 and LAN8650/1 Rev.B0/B1
 	  Internal PHYs.
 
 config MICROCHIP_PHY
diff --git a/drivers/net/phy/microchip_t1s.c b/drivers/net/phy/microchip_t1s.c
index a874ac87ce10..003aecaf35b2 100644
--- a/drivers/net/phy/microchip_t1s.c
+++ b/drivers/net/phy/microchip_t1s.c
@@ -3,7 +3,7 @@ 
  * Driver for Microchip 10BASE-T1S PHYs
  *
  * Support: Microchip Phys:
- *  lan8670/1/2 Rev.B1
+ *  lan8670/1/2 Rev.B1/C1
  *  lan8650/1 Rev.B0/B1 Internal PHYs
  */
 
@@ -12,6 +12,7 @@ 
 #include <linux/phy.h>
 
 #define PHY_ID_LAN867X_REVB1 0x0007C162
+#define PHY_ID_LAN867X_REVC1 0x0007C164
 /* Both Rev.B0 and B1 clause 22 PHYID's are same due to B1 chip limitation */
 #define PHY_ID_LAN865X_REVB 0x0007C1B3
 
@@ -290,6 +291,58 @@  static int lan867x_check_reset_complete(struct phy_device *phydev)
 	return 0;
 }
 
+static int lan867x_revc1_config_init(struct phy_device *phydev)
+{
+	s8 offsets[2];
+	int ret;
+
+	ret = lan867x_check_reset_complete(phydev);
+	if (ret)
+		return ret;
+
+	ret = lan865x_generate_cfg_offsets(phydev, offsets);
+	if (ret)
+		return ret;
+
+	/* LAN867x Rev.C1 configuration settings are equal to the first 9
+	 * configuration settings and all the sqi fixup settings from LAN865x
+	 * Rev.B0/B1. So the same fixup registers and values from LAN865x
+	 * Rev.B0/B1 are used for LAN867x Rev.C1 to avoid duplication.
+	 * Refer the below links for the comparison.
+	 * https://www.microchip.com/en-us/application-notes/an1760
+	 * Revision F (DS60001760G - June 2024)
+	 * https://www.microchip.com/en-us/application-notes/an1699
+	 * Revision E (DS60001699F - June 2024)
+	 */
+	for (int i = 0; i < 9; i++) {
+		ret = phy_write_mmd(phydev, MDIO_MMD_VEND2,
+				    lan865x_revb_fixup_registers[i],
+				    lan865x_revb_fixup_values[i]);
+		if (ret)
+			return ret;
+
+		if (i == 1) {
+			ret = lan865x_setup_cfgparam(phydev, offsets);
+			if (ret)
+				return ret;
+		}
+	}
+
+	ret = lan865x_setup_sqi_cfgparam(phydev, offsets);
+	if (ret)
+		return ret;
+
+	for (int i = 0; i < ARRAY_SIZE(lan865x_revb_sqi_fixup_regs); i++) {
+		ret = phy_write_mmd(phydev, MDIO_MMD_VEND2,
+				    lan865x_revb_sqi_fixup_regs[i],
+				    lan865x_revb_sqi_fixup_values[i]);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
 static int lan867x_revb1_config_init(struct phy_device *phydev)
 {
 	int err;
@@ -370,6 +423,16 @@  static struct phy_driver microchip_t1s_driver[] = {
 		.set_plca_cfg	    = genphy_c45_plca_set_cfg,
 		.get_plca_status    = genphy_c45_plca_get_status,
 	},
+	{
+		PHY_ID_MATCH_EXACT(PHY_ID_LAN867X_REVC1),
+		.name               = "LAN867X Rev.C1",
+		.features           = PHY_BASIC_T1S_P2MP_FEATURES,
+		.config_init        = lan867x_revc1_config_init,
+		.read_status        = lan86xx_read_status,
+		.get_plca_cfg	    = genphy_c45_plca_get_cfg,
+		.set_plca_cfg	    = genphy_c45_plca_set_cfg,
+		.get_plca_status    = genphy_c45_plca_get_status,
+	},
 	{
 		PHY_ID_MATCH_EXACT(PHY_ID_LAN865X_REVB),
 		.name               = "LAN865X Rev.B0/B1 Internal Phy",
@@ -388,6 +451,7 @@  module_phy_driver(microchip_t1s_driver);
 
 static struct mdio_device_id __maybe_unused tbl[] = {
 	{ PHY_ID_MATCH_EXACT(PHY_ID_LAN867X_REVB1) },
+	{ PHY_ID_MATCH_EXACT(PHY_ID_LAN867X_REVC1) },
 	{ PHY_ID_MATCH_EXACT(PHY_ID_LAN865X_REVB) },
 	{ }
 };