diff options
Diffstat (limited to 'drivers/reset')
| -rw-r--r-- | drivers/reset/Kconfig | 4 | ||||
| -rw-r--r-- | drivers/reset/reset-brcmstb-rescal.c | 2 | ||||
| -rw-r--r-- | drivers/reset/reset-socfpga.c | 26 | ||||
| -rw-r--r-- | drivers/reset/tegra/reset-bpmp.c | 9 |
4 files changed, 37 insertions, 4 deletions
diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig index c1973dcbbac8..85024eb1d2ea 100644 --- a/drivers/reset/Kconfig +++ b/drivers/reset/Kconfig @@ -147,8 +147,8 @@ config RESET_OXNAS bool config RESET_PISTACHIO - bool "Pistachio Reset Driver" if COMPILE_TEST - default MACH_PISTACHIO + bool "Pistachio Reset Driver" + depends on MIPS || COMPILE_TEST help This enables the reset driver for ImgTec Pistachio SoCs. diff --git a/drivers/reset/reset-brcmstb-rescal.c b/drivers/reset/reset-brcmstb-rescal.c index b6f074d6a65f..433fa0c40e47 100644 --- a/drivers/reset/reset-brcmstb-rescal.c +++ b/drivers/reset/reset-brcmstb-rescal.c @@ -38,7 +38,7 @@ static int brcm_rescal_reset_set(struct reset_controller_dev *rcdev, } ret = readl_poll_timeout(base + BRCM_RESCAL_STATUS, reg, - !(reg & BRCM_RESCAL_STATUS_BIT), 100, 1000); + (reg & BRCM_RESCAL_STATUS_BIT), 100, 1000); if (ret) { dev_err(data->dev, "time out on SATA/PCIe rescal\n"); return ret; diff --git a/drivers/reset/reset-socfpga.c b/drivers/reset/reset-socfpga.c index 2a72f861f798..8c6492e5693c 100644 --- a/drivers/reset/reset-socfpga.c +++ b/drivers/reset/reset-socfpga.c @@ -92,3 +92,29 @@ void __init socfpga_reset_init(void) for_each_matching_node(np, socfpga_early_reset_dt_ids) a10_reset_init(np); } + +/* + * The early driver is problematic, because it doesn't register + * itself as a driver. This causes certain device links to prevent + * consumer devices from probing. The hacky solution is to register + * an empty driver, whose only job is to attach itself to the reset + * manager and call probe. + */ +static const struct of_device_id socfpga_reset_dt_ids[] = { + { .compatible = "altr,rst-mgr", }, + { /* sentinel */ }, +}; + +static int reset_simple_probe(struct platform_device *pdev) +{ + return 0; +} + +static struct platform_driver reset_socfpga_driver = { + .probe = reset_simple_probe, + .driver = { + .name = "socfpga-reset", + .of_match_table = socfpga_reset_dt_ids, + }, +}; +builtin_platform_driver(reset_socfpga_driver); diff --git a/drivers/reset/tegra/reset-bpmp.c b/drivers/reset/tegra/reset-bpmp.c index 24d3395964cc..4c5bba52b105 100644 --- a/drivers/reset/tegra/reset-bpmp.c +++ b/drivers/reset/tegra/reset-bpmp.c @@ -20,6 +20,7 @@ static int tegra_bpmp_reset_common(struct reset_controller_dev *rstc, struct tegra_bpmp *bpmp = to_tegra_bpmp(rstc); struct mrq_reset_request request; struct tegra_bpmp_message msg; + int err; memset(&request, 0, sizeof(request)); request.cmd = command; @@ -30,7 +31,13 @@ static int tegra_bpmp_reset_common(struct reset_controller_dev *rstc, msg.tx.data = &request; msg.tx.size = sizeof(request); - return tegra_bpmp_transfer(bpmp, &msg); + err = tegra_bpmp_transfer(bpmp, &msg); + if (err) + return err; + if (msg.rx.ret) + return -EINVAL; + + return 0; } static int tegra_bpmp_reset_module(struct reset_controller_dev *rstc, |