net/phy/cortina: Add No firmware upload option

Current Cortina phy driver assumes that firmware upload
is required during initialization and is dependent
on presence of corresponding macros like CONFIG_CORTINA_FW_ADDR
for compilation.

But Cortina phy has provision to store phy firmware in
attached dedicated EEPROM. And boards designed with such
EEPROM does not require firmware upload.

Add CORTINA_NO_FW_UPLOAD option in cortina.c to support
such boards.

Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

diff --git a/drivers/net/phy/cortina.c b/drivers/net/phy/cortina.c
index 3ac833d71a99a5e969b046115ead1f9715191a9a..9cb3a52c208c72c652f00ad96d10af98c8252d28 100644 (file)
--- a/drivers/net/phy/cortina.c
+++ b/drivers/net/phy/cortina.c
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier:     GPL-2.0+
  *
  * Copyright 2014 Freescale Semiconductor, Inc.
+ * Copyright 2018 NXP
  *
  */
 
@@ -27,6 +28,7 @@
 #error The Cortina PHY needs 10G support
 #endif
 
+#ifndef CORTINA_NO_FW_UPLOAD
 struct cortina_reg_config cortina_reg_cfg[] = {
        /* CS4315_enable_sr_mode */
        {VILLA_GLOBAL_MSEQCLKCTRL, 0x8004},
@@ -215,12 +217,22 @@ void cs4340_upload_firmware(struct phy_device *phydev)
                phy_write(phydev, 0x00, fw_temp.reg_addr, fw_temp.reg_value);
        }
 }
+#endif
 
 int cs4340_phy_init(struct phy_device *phydev)
 {
+#ifndef CORTINA_NO_FW_UPLOAD
        int timeout = 100;  /* 100ms */
+#endif
        int reg_value;
 
+       /*
+        * Cortina phy has provision to store
+        * phy firmware in attached dedicated EEPROM.
+        * Boards designed with EEPROM attached to Cortina
+        * does not require FW upload.
+        */
+#ifndef CORTINA_NO_FW_UPLOAD
        /* step1: BIST test */
        phy_write(phydev, 0x00, VILLA_GLOBAL_MSEQCLKCTRL,     0x0004);
        phy_write(phydev, 0x00, VILLA_GLOBAL_LINE_SOFT_RESET, 0x0000);
@@ -241,6 +253,7 @@ int cs4340_phy_init(struct phy_device *phydev)
 
        /* setp2: upload ucode */
        cs4340_upload_firmware(phydev);
+#endif
        reg_value = phy_read(phydev, 0x00, VILLA_GLOBAL_DWNLD_CHECKSUM_STATUS);
        if (reg_value) {
                debug("%s checksum status failed.\n", __func__);