linux-kernel - [PATCH 1/2] PCI: tegra: Remove support for ZRX-DC compliant PHY from platform driver

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Date:   Mon, 28 Oct 2019 18:12:19 +0530
From:   Anvesh Salveru <anvesh.s@...sung.com>
To:     linux-pci@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org
Cc:     pankaj.dubey@...sung.com, thierry.reding@...il.com,
        jonathanh@...dia.com, Anvesh Salveru <anvesh.s@...sung.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Andrew Murray <andrew.murray@....com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Vidya Sagar <vidyas@...dia.com>
Subject: [PATCH 1/2] PCI: tegra: Remove support for ZRX-DC compliant PHY
 from platform driver

As part of dw_pcie_setup(), PHYs which are compliant to ZRX-DC
specification are already handled based on "snps,phy-zrxdc-compliant"
property in controller DT node. So, instead of handling ZRX-DC
compliant settings in each platform driver, remove this driver
specific code.

CC: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
CC: Andrew Murray <andrew.murray@....com>
CC: Bjorn Helgaas <bhelgaas@...gle.com>
CC: Vidya Sagar <vidyas@...dia.com>
Signed-off-by: Anvesh Salveru <anvesh.s@...sung.com>
Signed-off-by: Pankaj Dubey <pankaj.dubey@...sung.com>
---
Depends on the following patch:
https://patchwork.kernel.org/patch/11215241/
https://patchwork.kernel.org/patch/11215239/

 drivers/pci/controller/dwc/pcie-tegra194.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c
index f89f5acee72d..f3a6ea89b8a8 100644
--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -782,10 +782,6 @@ static void tegra_pcie_prepare_host(struct pcie_port *pp)
 
 	init_host_aspm(pcie);
 
-	val = dw_pcie_readl_dbi(pci, GEN3_RELATED_OFF);
-	val &= ~GEN3_RELATED_OFF_GEN3_ZRXDC_NONCOMPL;
-	dw_pcie_writel_dbi(pci, GEN3_RELATED_OFF, val);
-
 	if (pcie->update_fc_fixup) {
 		val = dw_pcie_readl_dbi(pci, CFG_TIMER_CTRL_MAX_FUNC_NUM_OFF);
 		val |= 0x1 << CFG_TIMER_CTRL_ACK_NAK_SHIFT;
-- 
2.17.1