pci: tegra: add/enable support for Tegra210

This needs a separate compatible value from Tegra124 since the new HW
version has bugs that would prevent a driver for previous HW versions
from operating at all.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>

drivers/pci/pci_tegra.c

@@ -387,6 +387,7 @@ static int tegra_pcie_get_xbar_config(const void *fdt, int node, u32 lanes,
 		break;
 
 	case COMPAT_NVIDIA_TEGRA124_PCIE:
+	case COMPAT_NVIDIA_TEGRA210_PCIE:
 		switch (lanes) {
 		case 0x0000104:
 			debug("4x1, 1x1 configuration\n");
@@ -1033,6 +1034,17 @@ static const struct tegra_pcie_soc tegra124_pcie_soc = {
 	.force_pca_enable = false,
 };
 
+static const struct tegra_pcie_soc tegra210_pcie_soc = {
+	.num_ports = 2,
+	.pads_pll_ctl = PADS_PLL_CTL_TEGRA30,
+	.tx_ref_sel = PADS_PLL_CTL_TXCLKREF_BUF_EN,
+	.has_pex_clkreq_en = true,
+	.has_pex_bias_ctrl = true,
+	.has_cml_clk = true,
+	.has_gen2 = true,
+	.force_pca_enable = true,
+};
+
 static int process_nodes(const void *fdt, int nodes[], unsigned int count)
 {
 	unsigned int i;
@@ -1068,6 +1080,10 @@ static int process_nodes(const void *fdt, int nodes[], unsigned int count)
 			soc = &tegra124_pcie_soc;
 			break;
 
+		case COMPAT_NVIDIA_TEGRA210_PCIE:
+			soc = &tegra210_pcie_soc;
+			break;
+
 		default:
 			error("unsupported compatible: %s",
 			      fdtdec_get_compatible(id));
@@ -1164,6 +1180,12 @@ void pci_init_board(void)
 
 	tegra_pcie_board_init();
 
+	count = fdtdec_find_aliases_for_id(fdt, "pcie-controller",
+					   COMPAT_NVIDIA_TEGRA210_PCIE,
+					   nodes, ARRAY_SIZE(nodes));
+	if (process_nodes(fdt, nodes, count))
+		return;
+
 	count = fdtdec_find_aliases_for_id(fdt, "pcie-controller",
 					   COMPAT_NVIDIA_TEGRA124_PCIE,
 					   nodes, ARRAY_SIZE(nodes));

include/fdtdec.h

@@ -130,6 +130,7 @@ enum fdt_compat_id {
 	COMPAT_NVIDIA_TEGRA30_SDMMC,	/* Tegra30 SDMMC controller */
 	COMPAT_NVIDIA_TEGRA20_SDMMC,	/* Tegra20 SDMMC controller */
 	COMPAT_NVIDIA_TEGRA124_PCIE,	/* Tegra 124 PCIe controller */
+	COMPAT_NVIDIA_TEGRA210_PCIE,	/* Tegra 210 PCIe controller */
 	COMPAT_NVIDIA_TEGRA30_PCIE,	/* Tegra 30 PCIe controller */
 	COMPAT_NVIDIA_TEGRA20_PCIE,	/* Tegra 20 PCIe controller */
 	COMPAT_NVIDIA_TEGRA124_XUSB_PADCTL,

lib/fdtdec.c

@@ -36,6 +36,7 @@ static const char * const compat_names[COMPAT_COUNT] = {
 	COMPAT(NVIDIA_TEGRA30_SDMMC, "nvidia,tegra30-sdhci"),
 	COMPAT(NVIDIA_TEGRA20_SDMMC, "nvidia,tegra20-sdhci"),
 	COMPAT(NVIDIA_TEGRA124_PCIE, "nvidia,tegra124-pcie"),
+	COMPAT(NVIDIA_TEGRA210_PCIE, "nvidia,tegra210-pcie"),
 	COMPAT(NVIDIA_TEGRA30_PCIE, "nvidia,tegra30-pcie"),
 	COMPAT(NVIDIA_TEGRA20_PCIE, "nvidia,tegra20-pcie"),
 	COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"),