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PCI: tegra264: Remove XAL mem registers programming

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Remove the XAL memory register programming from the Linux driver, since
this is done by the BPMP-FW for all controllers.

Bug 5033472

Change-Id: I64ec6347d59d77125c34ae52ac3b24413e1f5479
Signed-off-by: Srishti Goel <srgoel@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3304008
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
This commit is contained in:
Srishti Goel
2025-02-17 06:54:57 +00:00
committed by Jon Hunter
parent 62431fc5f3
commit 529f22ea6a
1 changed files with 1 additions and 50 deletions
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51
drivers/pci/controller/private-soc/pcie-tegra264.c
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@@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-only
// SPDX-FileCopyrightText: Copyright (c) 2022-2024, NVIDIA CORPORATION. All rights reserved.
// SPDX-FileCopyrightText: Copyright (c) 2022-2025, NVIDIA CORPORATION. All rights reserved.
/*
* PCIe host controller driver for Tegra264 SoC
*
@@ -33,24 +33,6 @@ extern int of_get_pci_domain_nr(struct device_node *node);
#define PCIE_LINK_UP_DELAY 10000 /* 10 msec */
#define PCIE_LINK_UP_TIMEOUT 1000000 /* 1 s */
/* XAL registers */
#define XAL_RC_IO_BASE_HI 0xc
#define XAL_RC_IO_BASE_LO 0x10
#define XAL_RC_IO_LIMIT_HI 0x14
#define XAL_RC_IO_LIMIT_LO 0x18
#define XAL_RC_MEM_32BIT_BASE_HI 0x1c
#define XAL_RC_MEM_32BIT_BASE_LO 0x20
#define XAL_RC_MEM_32BIT_LIMIT_HI 0x24
#define XAL_RC_MEM_32BIT_LIMIT_LO 0x28
#define XAL_RC_MEM_64BIT_BASE_HI 0x2c
#define XAL_RC_MEM_64BIT_BASE_LO 0x30
#define XAL_RC_MEM_64BIT_LIMIT_HI 0x34
#define XAL_RC_MEM_64BIT_LIMIT_LO 0x38
#define XAL_RC_BAR_CNTL_STANDARD 0x40
#define XAL_RC_BAR_CNTL_STANDARD_IOBAR_EN BIT(0)
#define XAL_RC_BAR_CNTL_STANDARD_32B_BAR_EN BIT(1)
#define XAL_RC_BAR_CNTL_STANDARD_64B_BAR_EN BIT(2)
/* XTL registers */
#define XTL_RC_PCIE_CFG_LINK_CONTROL_STATUS 0x58
#define XTL_RC_PCIE_CFG_LINK_CONTROL_STATUS_DLL_ACTIVE BIT(29)
@@ -67,7 +49,6 @@ struct tegra264_pcie {
struct pci_host_bridge *bridge;
struct gpio_desc *pex_wake_gpiod;
unsigned int pex_wake_irq;
void __iomem *xal_base;
void __iomem *xtl_pri_base;
void __iomem *ecam_base;
u64 prefetch_mem_base;
@@ -142,29 +123,6 @@ static void tegra264_pcie_init(struct tegra264_pcie *pcie)
{
u32 val;
/* Program XAL */
writel(upper_32_bits(pcie->io_base), pcie->xal_base + XAL_RC_IO_BASE_HI);
writel(lower_32_bits(pcie->io_base), pcie->xal_base + XAL_RC_IO_BASE_LO);
writel(upper_32_bits(pcie->io_limit), pcie->xal_base + XAL_RC_IO_LIMIT_HI);
writel(lower_32_bits(pcie->io_limit), pcie->xal_base + XAL_RC_IO_LIMIT_LO);
writel(upper_32_bits(pcie->mem_base), pcie->xal_base + XAL_RC_MEM_32BIT_BASE_HI);
writel(lower_32_bits(pcie->mem_base), pcie->xal_base + XAL_RC_MEM_32BIT_BASE_LO);
writel(upper_32_bits(pcie->mem_limit), pcie->xal_base + XAL_RC_MEM_32BIT_LIMIT_HI);
writel(lower_32_bits(pcie->mem_limit), pcie->xal_base + XAL_RC_MEM_32BIT_LIMIT_LO);
writel(upper_32_bits(pcie->prefetch_mem_base), pcie->xal_base + XAL_RC_MEM_64BIT_BASE_HI);
writel(lower_32_bits(pcie->prefetch_mem_base), pcie->xal_base + XAL_RC_MEM_64BIT_BASE_LO);
writel(upper_32_bits(pcie->prefetch_mem_limit), pcie->xal_base + XAL_RC_MEM_64BIT_LIMIT_HI);
writel(lower_32_bits(pcie->prefetch_mem_limit), pcie->xal_base + XAL_RC_MEM_64BIT_LIMIT_LO);
val = XAL_RC_BAR_CNTL_STANDARD_IOBAR_EN | XAL_RC_BAR_CNTL_STANDARD_32B_BAR_EN |
XAL_RC_BAR_CNTL_STANDARD_64B_BAR_EN;
writel(val, pcie->xal_base + XAL_RC_BAR_CNTL_STANDARD);
/* Setup bus numbers */
val = readl(pcie->ecam_base + PCI_PRIMARY_BUS);
val &= 0xff000000;
@@ -274,13 +232,6 @@ static int tegra264_pcie_probe(struct platform_device *pdev)
return ret;
}
pcie->xal_base = devm_platform_ioremap_resource_byname(pdev, "xal");
if (IS_ERR(pcie->xal_base)) {
ret = PTR_ERR(pcie->xal_base);
dev_err(dev, "failed to map xal memory: %d\n", ret);
return ret;
}
pcie->xtl_pri_base = devm_platform_ioremap_resource_byname(pdev, "xtl-pri");
if (IS_ERR(pcie->xtl_pri_base)) {
ret = PTR_ERR(pcie->xtl_pri_base);