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Message-ID: <20240626104544.14233-7-svarbanov@suse.de>
Date: Wed, 26 Jun 2024 13:45:43 +0300
From: Stanimir Varbanov <svarbanov@...e.de>
To: linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-rpi-kernel@...ts.infradead.org,
linux-pci@...r.kernel.org,
Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>
Cc: Thomas Gleixner <tglx@...utronix.de>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Florian Fainelli <florian.fainelli@...adcom.com>,
Jim Quinlan <jim2101024@...il.com>,
Nicolas Saenz Julienne <nsaenz@...nel.org>,
Bjorn Helgaas <bhelgaas@...gle.com>,
Lorenzo Pieralisi <lpieralisi@...nel.org>,
kw@...ux.com,
Philipp Zabel <p.zabel@...gutronix.de>,
Andrea della Porta <andrea.porta@...e.com>,
Phil Elwell <phil@...pberrypi.com>,
Jonathan Bell <jonathan@...pberrypi.com>,
Stanimir Varbanov <svarbanov@...e.de>
Subject: [PATCH 6/7] PCI: brcmstb: Add bcm2712 support
Add bare minimum amount of changes in order to support
PCIe RC hardware IP found in RPi5.
Signed-off-by: Stanimir Varbanov <svarbanov@...e.de>
---
drivers/pci/controller/pcie-brcmstb.c | 257 +++++++++++++++++++++++++-
1 file changed, 250 insertions(+), 7 deletions(-)
diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c
index ff8e5e672ff0..ec0a66ae06e4 100644
--- a/drivers/pci/controller/pcie-brcmstb.c
+++ b/drivers/pci/controller/pcie-brcmstb.c
@@ -55,6 +55,10 @@
#define PCIE_RC_DL_MDIO_WR_DATA 0x1104
#define PCIE_RC_DL_MDIO_RD_DATA 0x1108
+#define PCIE_RC_PL_PHY_CTL_15 0x184c
+#define PCIE_RC_PL_PHY_CTL_15_DIS_PLL_PD_MASK 0x400000
+#define PCIE_RC_PL_PHY_CTL_15_PM_CLK_PERIOD_MASK 0xff
+
#define PCIE_MISC_MISC_CTRL 0x4008
#define PCIE_MISC_MISC_CTRL_PCIE_RCB_64B_MODE_MASK 0x80
#define PCIE_MISC_MISC_CTRL_PCIE_RCB_MPS_MODE_MASK 0x400
@@ -77,6 +81,7 @@
#define PCIE_MISC_RC_BAR1_CONFIG_LO 0x402c
#define PCIE_MISC_RC_BAR1_CONFIG_LO_SIZE_MASK 0x1f
+#define PCIE_MISC_RC_BAR1_CONFIG_HI 0x4030
#define PCIE_MISC_RC_BAR2_CONFIG_LO 0x4034
#define PCIE_MISC_RC_BAR2_CONFIG_LO_SIZE_MASK 0x1f
@@ -92,6 +97,8 @@
#define PCIE_MISC_MSI_DATA_CONFIG_VAL_32 0xffe06540
#define PCIE_MISC_MSI_DATA_CONFIG_VAL_8 0xfff86540
+#define PCIE_MISC_RC_CONFIG_RETRY_TIMEOUT 0x405c
+
#define PCIE_MISC_PCIE_CTRL 0x4064
#define PCIE_MISC_PCIE_CTRL_PCIE_L23_REQUEST_MASK 0x1
#define PCIE_MISC_PCIE_CTRL_PCIE_PERSTB_MASK 0x4
@@ -122,8 +129,9 @@
#define PCIE_MEM_WIN0_LIMIT_HI(win) \
PCIE_MISC_CPU_2_PCIE_MEM_WIN0_LIMIT_HI + ((win) * 8)
-#define PCIE_MISC_HARD_PCIE_HARD_DEBUG 0x4204
+#define PCIE_MISC_HARD_PCIE_HARD_DEBUG (pcie->cfg->offsets[PCIE_HARD_DEBUG])
#define PCIE_MISC_HARD_PCIE_HARD_DEBUG_CLKREQ_DEBUG_ENABLE_MASK 0x2
+#define PCIE_MISC_HARD_PCIE_HARD_DEBUG_PERST_ASSERT_MASK 0x8
#define PCIE_MISC_HARD_PCIE_HARD_DEBUG_L1SS_ENABLE_MASK 0x200000
#define PCIE_MISC_HARD_PCIE_HARD_DEBUG_SERDES_IDDQ_MASK 0x08000000
#define PCIE_BMIPS_MISC_HARD_PCIE_HARD_DEBUG_SERDES_IDDQ_MASK 0x00800000
@@ -131,7 +139,37 @@
(PCIE_MISC_HARD_PCIE_HARD_DEBUG_CLKREQ_DEBUG_ENABLE_MASK | \
PCIE_MISC_HARD_PCIE_HARD_DEBUG_L1SS_ENABLE_MASK)
-#define PCIE_INTR2_CPU_BASE 0x4300
+#define PCIE_MISC_UBUS_CTRL 0x40a4
+#define PCIE_MISC_UBUS_CTRL_UBUS_PCIE_REPLY_ERR_DIS_MASK BIT(13)
+#define PCIE_MISC_UBUS_CTRL_UBUS_PCIE_REPLY_DECERR_DIS_MASK BIT(19)
+
+#define PCIE_MISC_UBUS_TIMEOUT 0x40a8
+
+#define PCIE_MISC_UBUS_BAR1_CONFIG_REMAP 0x40ac
+#define PCIE_MISC_UBUS_BAR1_CONFIG_REMAP_ACCESS_ENABLE_MASK BIT(0)
+#define PCIE_MISC_UBUS_BAR1_CONFIG_REMAP_HI 0x40b0
+
+#define PCIE_MISC_UBUS_BAR2_CONFIG_REMAP 0x40b4
+#define PCIE_MISC_UBUS_BAR2_CONFIG_REMAP_ACCESS_ENABLE_MASK BIT(0)
+
+/* Additional RC BARs */
+#define PCIE_MISC_RC_BAR_CONFIG_LO_SIZE_MASK 0x1f
+#define PCIE_MISC_RC_BAR4_CONFIG_LO 0x40d4
+#define PCIE_MISC_RC_BAR4_CONFIG_HI 0x40d8
+#define PCIE_MISC_RC_BAR10_CONFIG_LO 0x4104
+#define PCIE_MISC_RC_BAR10_CONFIG_HI 0x4108
+
+#define PCIE_MISC_UBUS_BAR_CONFIG_REMAP_ENABLE 0x1
+#define PCIE_MISC_UBUS_BAR_CONFIG_REMAP_LO_MASK 0xfffff000
+#define PCIE_MISC_UBUS_BAR_CONFIG_REMAP_HI_MASK 0xff
+#define PCIE_MISC_UBUS_BAR4_CONFIG_REMAP_LO 0x410c
+#define PCIE_MISC_UBUS_BAR4_CONFIG_REMAP_HI 0x4110
+#define PCIE_MISC_UBUS_BAR10_CONFIG_REMAP_LO 0x413c
+#define PCIE_MISC_UBUS_BAR10_CONFIG_REMAP_HI 0x4140
+
+#define PCIE_MISC_AXI_READ_ERROR_DATA 0x4170
+
+#define PCIE_INTR2_CPU_BASE (pcie->cfg->offsets[INTR2_CPU])
#define PCIE_MSI_INTR2_BASE 0x4500
/* Offsets from PCIE_INTR2_CPU_BASE and PCIE_MSI_INTR2_BASE */
#define MSI_INT_STATUS 0x0
@@ -205,6 +243,8 @@ enum {
RGR1_SW_INIT_1,
EXT_CFG_INDEX,
EXT_CFG_DATA,
+ PCIE_HARD_DEBUG,
+ INTR2_CPU,
};
enum {
@@ -219,6 +259,7 @@ enum pcie_type {
BCM4908,
BCM7278,
BCM2711,
+ BCM2712,
};
struct pcie_cfg_data {
@@ -264,6 +305,7 @@ struct brcm_pcie {
struct brcm_msi *msi;
struct reset_control *rescal;
struct reset_control *perst_reset;
+ struct reset_control *bridge_reset;
int num_memc;
u64 memc_size[PCIE_BRCM_MAX_MEMC];
u32 hw_rev;
@@ -288,8 +330,8 @@ static int brcm_pcie_encode_ibar_size(u64 size)
if (log2_in >= 12 && log2_in <= 15)
/* Covers 4KB to 32KB (inclusive) */
return (log2_in - 12) + 0x1c;
- else if (log2_in >= 16 && log2_in <= 35)
- /* Covers 64KB to 32GB, (inclusive) */
+ else if (log2_in >= 16 && log2_in <= 36)
+ /* Covers 64KB to 64GB, (inclusive) */
return log2_in - 15;
/* Something is awry so disable */
return 0;
@@ -444,7 +486,7 @@ static struct irq_chip brcm_msi_irq_chip = {
static struct msi_domain_info brcm_msi_domain_info = {
.flags = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
- MSI_FLAG_MULTI_PCI_MSI),
+ MSI_FLAG_MULTI_PCI_MSI | MSI_FLAG_PCI_MSIX),
.chip = &brcm_msi_irq_chip,
};
@@ -668,6 +710,41 @@ static int brcm_pcie_enable_msi(struct brcm_pcie *pcie)
return 0;
}
+static int brcm_pcie_enable_external_msix(struct brcm_pcie *pcie,
+ struct device_node *msi_np)
+{
+ u64 msi_pci_addr, msi_phys_addr;
+ u32 val;
+
+ if (of_property_read_u64(msi_np, "brcm,msi-pci-addr", &msi_pci_addr)) {
+ dev_err(pcie->dev, "Unable to find MSI PCI address\n");
+ return -EINVAL;
+ }
+
+ if (of_property_read_u64(msi_np, "reg", &msi_phys_addr)) {
+ dev_err(pcie->dev, "Unable to find MSI physical address\n");
+ return -EINVAL;
+ }
+
+ /* Use RC_BAR1 for MIP access */
+
+ val = lower_32_bits(msi_pci_addr);
+ val |= brcm_pcie_encode_ibar_size(0x1000);
+ writel(val, pcie->base + PCIE_MISC_RC_BAR1_CONFIG_LO);
+
+ val = upper_32_bits(msi_pci_addr);
+ writel(val, pcie->base + PCIE_MISC_RC_BAR1_CONFIG_HI);
+
+ val = lower_32_bits(msi_phys_addr);
+ val |= PCIE_MISC_UBUS_BAR1_CONFIG_REMAP_ACCESS_ENABLE_MASK;
+ writel(val, pcie->base + PCIE_MISC_UBUS_BAR1_CONFIG_REMAP);
+
+ val = upper_32_bits(msi_phys_addr);
+ writel(val, pcie->base + PCIE_MISC_UBUS_BAR1_CONFIG_REMAP_HI);
+
+ return 0;
+}
+
/* The controller is capable of serving in both RC and EP roles */
static bool brcm_pcie_rc_mode(struct brcm_pcie *pcie)
{
@@ -748,6 +825,18 @@ static void brcm_pcie_bridge_sw_init_set_7278(struct brcm_pcie *pcie, u32 val)
writel(tmp, pcie->base + PCIE_RGR1_SW_INIT_1(pcie));
}
+static void brcm_pcie_bridge_sw_init_set_2712(struct brcm_pcie *pcie, u32 val)
+{
+ if (WARN_ONCE(!pcie->bridge_reset,
+ "missing bridge reset controller\n"))
+ return;
+
+ if (val)
+ reset_control_assert(pcie->bridge_reset);
+ else
+ reset_control_deassert(pcie->bridge_reset);
+}
+
static void brcm_pcie_perst_set_4908(struct brcm_pcie *pcie, u32 val)
{
if (WARN_ONCE(!pcie->perst_reset, "missing PERST# reset controller\n"))
@@ -769,6 +858,16 @@ static void brcm_pcie_perst_set_7278(struct brcm_pcie *pcie, u32 val)
writel(tmp, pcie->base + PCIE_MISC_PCIE_CTRL);
}
+static void brcm_pcie_perst_set_2712(struct brcm_pcie *pcie, u32 val)
+{
+ u32 tmp;
+
+ /* Perst bit has moved and assert value is 0 */
+ tmp = readl(pcie->base + PCIE_MISC_PCIE_CTRL);
+ u32p_replace_bits(&tmp, !val, PCIE_MISC_PCIE_CTRL_PCIE_PERSTB_MASK);
+ writel(tmp, pcie->base + PCIE_MISC_PCIE_CTRL);
+}
+
static void brcm_pcie_perst_set_generic(struct brcm_pcie *pcie, u32 val)
{
u32 tmp;
@@ -795,6 +894,9 @@ static int brcm_pcie_get_rc_bar2_size_and_offset(struct brcm_pcie *pcie,
size += entry->res->end - entry->res->start + 1;
if (pcie_beg < lowest_pcie_addr)
lowest_pcie_addr = pcie_beg;
+ /* Only consider the first entry */
+ if (pcie->cfg->type == BCM2711 || pcie->cfg->type == BCM2712)
+ break;
}
if (lowest_pcie_addr == ~(u64)0) {
@@ -865,6 +967,30 @@ static int brcm_pcie_get_rc_bar2_size_and_offset(struct brcm_pcie *pcie,
return 0;
}
+static int brcm_pcie_get_rc_bar_n(struct brcm_pcie *pcie,
+ int idx,
+ u64 *rc_bar_cpu,
+ u64 *rc_bar_size,
+ u64 *rc_bar_pci)
+{
+ struct pci_host_bridge *bridge = pci_host_bridge_from_priv(pcie);
+ struct resource_entry *entry;
+ int i = 0;
+
+ resource_list_for_each_entry(entry, &bridge->dma_ranges) {
+ if (i == idx) {
+ *rc_bar_cpu = entry->res->start;
+ *rc_bar_size = entry->res->end - entry->res->start + 1;
+ *rc_bar_pci = entry->res->start - entry->offset;
+ return 0;
+ }
+
+ i++;
+ }
+
+ return -EINVAL;
+}
+
static int brcm_pcie_setup(struct brcm_pcie *pcie)
{
u64 rc_bar2_offset, rc_bar2_size;
@@ -873,7 +999,7 @@ static int brcm_pcie_setup(struct brcm_pcie *pcie)
struct resource_entry *entry;
u32 tmp, burst, aspm_support;
int num_out_wins = 0;
- int ret, memc;
+ int ret, memc, count, i;
/* Reset the bridge */
pcie->cfg->bridge_sw_init_set(pcie, 1);
@@ -907,6 +1033,8 @@ static int brcm_pcie_setup(struct brcm_pcie *pcie)
burst = 0x0; /* 128 bytes */
else if (pcie->cfg->type == BCM7278)
burst = 0x3; /* 512 bytes */
+ else if (pcie->cfg->type == BCM2712)
+ burst = 0x1; /* 128 bytes */
else
burst = 0x2; /* 512 bytes */
@@ -934,7 +1062,11 @@ static int brcm_pcie_setup(struct brcm_pcie *pcie)
writel(upper_32_bits(rc_bar2_offset),
base + PCIE_MISC_RC_BAR2_CONFIG_HI);
+ tmp = readl(base + PCIE_MISC_UBUS_BAR2_CONFIG_REMAP);
+ u32p_replace_bits(&tmp, 1, PCIE_MISC_UBUS_BAR2_CONFIG_REMAP_ACCESS_ENABLE_MASK);
+ writel(tmp, base + PCIE_MISC_UBUS_BAR2_CONFIG_REMAP);
tmp = readl(base + PCIE_MISC_MISC_CTRL);
+
for (memc = 0; memc < pcie->num_memc; memc++) {
u32 scb_size_val = ilog2(pcie->memc_size[memc]) - 15;
@@ -945,8 +1077,32 @@ static int brcm_pcie_setup(struct brcm_pcie *pcie)
else if (memc == 2)
u32p_replace_bits(&tmp, scb_size_val, SCB_SIZE_MASK(2));
}
+
writel(tmp, base + PCIE_MISC_MISC_CTRL);
+ if (pcie->cfg->type == BCM2712) {
+ /* Suppress AXI error responses and return 1s for read failures */
+ tmp = readl(base + PCIE_MISC_UBUS_CTRL);
+ u32p_replace_bits(&tmp, 1, PCIE_MISC_UBUS_CTRL_UBUS_PCIE_REPLY_ERR_DIS_MASK);
+ u32p_replace_bits(&tmp, 1, PCIE_MISC_UBUS_CTRL_UBUS_PCIE_REPLY_DECERR_DIS_MASK);
+ writel(tmp, base + PCIE_MISC_UBUS_CTRL);
+ writel(0xffffffff, base + PCIE_MISC_AXI_READ_ERROR_DATA);
+
+ /*
+ * Adjust timeouts. The UBUS timeout also affects CRS
+ * completion retries, as the request will get terminated if
+ * either timeout expires, so both have to be a large value
+ * (in clocks of 750MHz).
+ * Set UBUS timeout to 250ms, then set RC config retry timeout
+ * to be ~240ms.
+ *
+ * Setting CRSVis=1 will stop the core from blocking on a CRS
+ * response, but does require the device to be well-behaved...
+ */
+ writel(0xb2d0000, base + PCIE_MISC_UBUS_TIMEOUT);
+ writel(0xaba0000, base + PCIE_MISC_RC_CONFIG_RETRY_TIMEOUT);
+ }
+
/*
* We ideally want the MSI target address to be located in the 32bit
* addressable memory area. Some devices might depend on it. This is
@@ -983,6 +1139,38 @@ static int brcm_pcie_setup(struct brcm_pcie *pcie)
PCIE_RC_CFG_PRIV1_LINK_CAPABILITY_ASPM_SUPPORT_MASK);
writel(tmp, base + PCIE_RC_CFG_PRIV1_LINK_CAPABILITY);
+ /* Program additional inbound windows (RC_BAR4..RC_BAR10) */
+ count = (pcie->cfg->type == BCM2712) ? 7 : 0;
+ for (i = 0; i < count; i++) {
+ u64 bar_cpu, bar_size, bar_pci;
+
+ ret = brcm_pcie_get_rc_bar_n(pcie, 1 + i, &bar_cpu, &bar_size,
+ &bar_pci);
+ if (ret)
+ break;
+
+ tmp = lower_32_bits(bar_pci);
+ u32p_replace_bits(&tmp, brcm_pcie_encode_ibar_size(bar_size),
+ PCIE_MISC_RC_BAR_CONFIG_LO_SIZE_MASK);
+ writel(tmp, base + PCIE_MISC_RC_BAR4_CONFIG_LO + i * 8);
+ writel(upper_32_bits(bar_pci),
+ base + PCIE_MISC_RC_BAR4_CONFIG_HI + i * 8);
+
+ tmp = upper_32_bits(bar_cpu) &
+ PCIE_MISC_UBUS_BAR_CONFIG_REMAP_HI_MASK;
+ writel(tmp,
+ base + PCIE_MISC_UBUS_BAR4_CONFIG_REMAP_HI + i * 8);
+ tmp = lower_32_bits(bar_cpu) &
+ PCIE_MISC_UBUS_BAR_CONFIG_REMAP_LO_MASK;
+ writel(tmp | PCIE_MISC_UBUS_BAR_CONFIG_REMAP_ENABLE,
+ base + PCIE_MISC_UBUS_BAR4_CONFIG_REMAP_LO + i * 8);
+ }
+
+ if (pcie->gen) {
+ dev_info(pcie->dev, "Forcing gen %d\n", pcie->gen);
+ brcm_pcie_set_gen(pcie, pcie->gen);
+ }
+
/*
* For config space accesses on the RC, show the right class for
* a PCIe-PCIe bridge (the default setting is to be EP mode).
@@ -1043,6 +1231,10 @@ static void brcm_extend_rbus_timeout(struct brcm_pcie *pcie)
const unsigned int REG_OFFSET = PCIE_RGR1_SW_INIT_1(pcie) - 8;
u32 timeout_us = 4000000; /* 4 seconds, our setting for L1SS */
+ /* BCM2712 doesn't have an RGR bridge */
+ if (pcie->cfg->type == BCM2712)
+ return;
+
/* Each unit in timeout register is 1/216,000,000 seconds */
writel(216 * timeout_us, pcie->base + REG_OFFSET);
}
@@ -1113,7 +1305,7 @@ static int brcm_pcie_start_link(struct brcm_pcie *pcie)
{
struct device *dev = pcie->dev;
void __iomem *base = pcie->base;
- u16 nlw, cls, lnksta;
+ u16 nlw, cls, lnksta, tmp16;
bool ssc_good = false;
int ret, i;
@@ -1159,6 +1351,17 @@ static int brcm_pcie_start_link(struct brcm_pcie *pcie)
pci_speed_string(pcie_link_speed[cls]), nlw,
ssc_good ? "(SSC)" : "(!SSC)");
+ /*
+ * RootCtl bits are reset by perst_n, which undoes pci_enable_crs()
+ * called prior to pci_add_new_bus() during probe. Re-enable here.
+ */
+ tmp16 = readw(base + BRCM_PCIE_CAP_REGS + PCI_EXP_RTCAP);
+ if (tmp16 & PCI_EXP_RTCAP_CRSVIS) {
+ tmp16 = readw(base + BRCM_PCIE_CAP_REGS + PCI_EXP_RTCTL);
+ u16p_replace_bits(&tmp16, 1, PCI_EXP_RTCTL_CRSSVE);
+ writew(tmp16, base + BRCM_PCIE_CAP_REGS + PCI_EXP_RTCTL);
+ }
+
return 0;
}
@@ -1336,6 +1539,13 @@ static void brcm_pcie_turn_off(struct brcm_pcie *pcie)
u32p_replace_bits(&tmp, 1, PCIE_MISC_HARD_PCIE_HARD_DEBUG_SERDES_IDDQ_MASK);
writel(tmp, base + PCIE_MISC_HARD_PCIE_HARD_DEBUG);
+ /*
+ * Shutting down this bridge on pcie1 means accesses to rescal block
+ * will hang the chip if another RC wants to assert/deassert rescal.
+ */
+ if (pcie->cfg->type == BCM2712)
+ return;
+
/* Shutdown PCIe bridge */
pcie->cfg->bridge_sw_init_set(pcie, 1);
}
@@ -1494,12 +1704,16 @@ static const int pcie_offsets[] = {
[RGR1_SW_INIT_1] = 0x9210,
[EXT_CFG_INDEX] = 0x9000,
[EXT_CFG_DATA] = 0x9004,
+ [PCIE_HARD_DEBUG] = 0x4204,
+ [INTR2_CPU] = 0x4300,
};
static const int pcie_offsets_bmips_7425[] = {
[RGR1_SW_INIT_1] = 0x8010,
[EXT_CFG_INDEX] = 0x8300,
[EXT_CFG_DATA] = 0x8304,
+ [PCIE_HARD_DEBUG] = 0x4204,
+ [INTR2_CPU] = 0x4300,
};
static const struct pcie_cfg_data generic_cfg = {
@@ -1538,6 +1752,8 @@ static const int pcie_offset_bcm7278[] = {
[RGR1_SW_INIT_1] = 0xc010,
[EXT_CFG_INDEX] = 0x9000,
[EXT_CFG_DATA] = 0x9004,
+ [PCIE_HARD_DEBUG] = 0x4204,
+ [INTR2_CPU] = 0x4300,
};
static const struct pcie_cfg_data bcm7278_cfg = {
@@ -1556,8 +1772,23 @@ static const struct pcie_cfg_data bcm2711_cfg = {
.bridge_sw_init_set = brcm_pcie_bridge_sw_init_set_generic,
};
+static const int pcie_offsets_bcm2712[] = {
+ [EXT_CFG_INDEX] = 0x9000,
+ [EXT_CFG_DATA] = 0x9004,
+ [PCIE_HARD_DEBUG] = 0x4304,
+ [INTR2_CPU] = 0x4400,
+};
+
+static const struct pcie_cfg_data bcm2712_cfg = {
+ .offsets = pcie_offsets_bcm2712,
+ .type = BCM2712,
+ .perst_set = brcm_pcie_perst_set_2712,
+ .bridge_sw_init_set = brcm_pcie_bridge_sw_init_set_2712,
+};
+
static const struct of_device_id brcm_pcie_match[] = {
{ .compatible = "brcm,bcm2711-pcie", .data = &bcm2711_cfg },
+ { .compatible = "brcm,bcm2712-pcie", .data = &bcm2712_cfg },
{ .compatible = "brcm,bcm4908-pcie", .data = &bcm4908_cfg },
{ .compatible = "brcm,bcm7211-pcie", .data = &generic_cfg },
{ .compatible = "brcm,bcm7278-pcie", .data = &bcm7278_cfg },
@@ -1635,6 +1866,12 @@ static int brcm_pcie_probe(struct platform_device *pdev)
clk_disable_unprepare(pcie->clk);
return PTR_ERR(pcie->perst_reset);
}
+ pcie->bridge_reset =
+ devm_reset_control_get_optional_exclusive(&pdev->dev, "bridge");
+ if (IS_ERR(pcie->bridge_reset)) {
+ clk_disable_unprepare(pcie->clk);
+ return PTR_ERR(pcie->bridge_reset);
+ }
ret = reset_control_reset(pcie->rescal);
if (ret)
@@ -1666,6 +1903,12 @@ static int brcm_pcie_probe(struct platform_device *pdev)
dev_err(pcie->dev, "probe of internal MSI failed");
goto fail;
}
+ } else if (pci_msi_enabled() && msi_np != pcie->np) {
+ ret = brcm_pcie_enable_external_msix(pcie, msi_np);
+ if (ret) {
+ dev_err(pcie->dev, "probe of external MSI-X failed\n");
+ goto fail;
+ }
}
bridge->ops = pcie->cfg->type == BCM7425 ?
--
2.43.0
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