linux-kernel - [PATCH v1 09/13] phy: cadence-torrent: Configure PHY_PLL_CFG as part of link_cmn

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Date:   Fri, 7 Aug 2020 13:46:03 +0200
From:   Swapnil Jakhade <sjakhade@...ence.com>
To:     <vkoul@...nel.org>, <kishon@...com>, <robh+dt@...nel.org>,
        <p.zabel@...gutronix.de>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>
CC:     <mparab@...ence.com>, <sjakhade@...ence.com>,
        <yamonkar@...ence.com>, <tomi.valkeinen@...com>, <jsarha@...com>,
        <nsekhar@...com>
Subject: [PATCH v1 09/13] phy: cadence-torrent: Configure PHY_PLL_CFG as part of link_cmn_vals

Include PHY_PLL_CFG as a first register value to configure in
link_cmn_vals array values.

Signed-off-by: Swapnil Jakhade <sjakhade@...ence.com>
---
 drivers/phy/cadence/phy-cadence-torrent.c | 22 ++++++++++++++++++----
 1 file changed, 18 insertions(+), 4 deletions(-)

diff --git a/drivers/phy/cadence/phy-cadence-torrent.c b/drivers/phy/cadence/phy-cadence-torrent.c
index d01a44b93e99..216b25512a08 100644
--- a/drivers/phy/cadence/phy-cadence-torrent.c
+++ b/drivers/phy/cadence/phy-cadence-torrent.c
@@ -1830,7 +1830,14 @@ static int cdns_torrent_phy_init(struct phy *phy)
 		reg_pairs = link_cmn_vals->reg_pairs;
 		num_regs = link_cmn_vals->num_regs;
 		regmap = cdns_phy->regmap_common_cdb;
-		for (i = 0; i < num_regs; i++)
+
+		/**
+		 * First array value in link_cmn_vals must be of
+		 * PHY_PLL_CFG register
+		 */
+		regmap_field_write(cdns_phy->phy_pll_cfg, reg_pairs[0].val);
+
+		for (i = 1; i < num_regs; i++)
 			regmap_write(regmap, reg_pairs[i].off,
 				     reg_pairs[i].val);
 	}
@@ -1907,8 +1914,6 @@ int cdns_torrent_phy_configure_multilink(struct cdns_torrent_phy *cdns_phy)
 	phy_t1 = cdns_phy->phys[0].phy_type;
 	phy_t2 = cdns_phy->phys[1].phy_type;
 
-	regmap_field_write(cdns_phy->phy_pll_cfg, 0x0003);
-
 	/**
 	 * First configure the PHY for first link with phy_t1. Get the array
 	 * values as [phy_t1][phy_t2][ssc].
@@ -1944,7 +1949,15 @@ int cdns_torrent_phy_configure_multilink(struct cdns_torrent_phy *cdns_phy)
 			reg_pairs = link_cmn_vals->reg_pairs;
 			num_regs = link_cmn_vals->num_regs;
 			regmap = cdns_phy->regmap_common_cdb;
-			for (i = 0; i < num_regs; i++)
+
+			/**
+			 * First array value in link_cmn_vals must be of
+			 * PHY_PLL_CFG register
+			 */
+			regmap_field_write(cdns_phy->phy_pll_cfg,
+					   reg_pairs[0].val);
+
+			for (i = 1; i < num_regs; i++)
 				regmap_write(regmap, reg_pairs[i].off,
 					     reg_pairs[i].val);
 		}
@@ -2283,6 +2296,7 @@ static int cdns_torrent_phy_remove(struct platform_device *pdev)
 
 /* PCIe and SGMII/QSGMII Unique SSC link configuration */
 static struct cdns_reg_pairs pcie_sgmii_link_cmn_regs[] = {
+	{0x0003, PHY_PLL_CFG},
 	{0x0601, CMN_PDIAG_PLL0_CLK_SEL_M0},
 	{0x0400, CMN_PDIAG_PLL0_CLK_SEL_M1},
 	{0x0601, CMN_PDIAG_PLL1_CLK_SEL_M0}
-- 
2.26.1