diff options
Diffstat (limited to 'drivers/soc/tegra/flowctrl.c')
| -rw-r--r-- | drivers/soc/tegra/flowctrl.c | 31 |
1 files changed, 21 insertions, 10 deletions
diff --git a/drivers/soc/tegra/flowctrl.c b/drivers/soc/tegra/flowctrl.c index 25eddfc8475d..0e345c05fc65 100644 --- a/drivers/soc/tegra/flowctrl.c +++ b/drivers/soc/tegra/flowctrl.c @@ -165,6 +165,7 @@ static int tegra_flowctrl_probe(struct platform_device *pdev) } static const struct of_device_id tegra_flowctrl_match[] = { + { .compatible = "nvidia,tegra210-flowctrl" }, { .compatible = "nvidia,tegra124-flowctrl" }, { .compatible = "nvidia,tegra114-flowctrl" }, { .compatible = "nvidia,tegra30-flowctrl" }, @@ -184,9 +185,7 @@ builtin_platform_driver(tegra_flowctrl_driver); static int __init tegra_flowctrl_init(void) { - /* hardcoded fallback if device tree node is missing */ - unsigned long base = 0x60007000; - unsigned long size = SZ_4K; + struct resource res; struct device_node *np; if (!soc_is_tegra()) @@ -194,17 +193,29 @@ static int __init tegra_flowctrl_init(void) np = of_find_matching_node(NULL, tegra_flowctrl_match); if (np) { - struct resource res; - - if (of_address_to_resource(np, 0, &res) == 0) { - size = resource_size(&res); - base = res.start; + if (of_address_to_resource(np, 0, &res) < 0) { + pr_err("failed to get flowctrl register\n"); + return -ENXIO; } - of_node_put(np); + } else if (IS_ENABLED(CONFIG_ARM)) { + /* + * Hardcoded fallback for 32-bit Tegra + * devices if device tree node is missing. + */ + res.start = 0x60007000; + res.end = 0x60007fff; + res.flags = IORESOURCE_MEM; + } else { + /* + * At this point we're running on a Tegra, + * that doesn't support the flow controller + * (eg. Tegra186), so just return. + */ + return 0; } - tegra_flowctrl_base = ioremap_nocache(base, size); + tegra_flowctrl_base = ioremap_nocache(res.start, resource_size(&res)); if (!tegra_flowctrl_base) return -ENXIO; |