diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/misc/imx8/scu_api.c | 20 | ||||
| -rw-r--r-- | drivers/net/fec_mxc.c | 14 | ||||
| -rw-r--r-- | drivers/watchdog/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/watchdog/Makefile | 1 | ||||
| -rw-r--r-- | drivers/watchdog/siemens_pmic_wdt.c | 59 |
5 files changed, 94 insertions, 7 deletions
diff --git a/drivers/misc/imx8/scu_api.c b/drivers/misc/imx8/scu_api.c index 591d71b096a..a40c8badf9a 100644 --- a/drivers/misc/imx8/scu_api.c +++ b/drivers/misc/imx8/scu_api.c @@ -951,6 +951,26 @@ int sc_timer_set_wdog_window(sc_ipc_t ipc, sc_timer_wdog_time_t window) return ret; } +int sc_timer_control_siemens_pmic_wdog(sc_ipc_t ipc, u8 cmd) +{ + struct udevice *dev = gd->arch.scu_dev; + struct sc_rpc_msg_s msg; + int size = sizeof(struct sc_rpc_msg_s); + int ret; + + RPC_VER(&msg) = SC_RPC_VERSION; + RPC_SVC(&msg) = (u8)SC_RPC_SVC_TIMER; + RPC_FUNC(&msg) = (u8)TIMER_FUNC_CTRL_SIEMENS_PMIC_WDOG; + RPC_U8(&msg, 0U) = (u8)cmd; + RPC_SIZE(&msg) = 2U; + + ret = misc_call(dev, SC_FALSE, &msg, size, &msg, size); + if (ret) + printf("%s: res:%d\n", __func__, RPC_R8(&msg)); + + return ret; +} + int sc_seco_authenticate(sc_ipc_t ipc, sc_seco_auth_cmd_t cmd, sc_faddr_t addr) { diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c index d6d5cb52fdd..eca681b16d1 100644 --- a/drivers/net/fec_mxc.c +++ b/drivers/net/fec_mxc.c @@ -160,7 +160,7 @@ static int fec_get_clk_rate(void *udev, int idx) } } -static void fec_mii_setspeed(struct ethernet_regs *eth) +static void fec_mii_setspeed(struct udevice *dev, struct ethernet_regs *eth) { /* * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock @@ -182,7 +182,7 @@ static void fec_mii_setspeed(struct ethernet_regs *eth) u32 hold; int ret; - ret = fec_get_clk_rate(NULL, 0); + ret = fec_get_clk_rate(dev, 0); if (ret < 0) { printf("Can't find FEC0 clk rate: %d\n", ret); return; @@ -581,7 +581,7 @@ static int fecmxc_init(struct udevice *dev) fec_reg_setup(fec); if (fec->xcv_type != SEVENWIRE) - fec_mii_setspeed(fec->bus->priv); + fec_mii_setspeed(dev, fec->bus->priv); /* Set Opcode/Pause Duration Register */ writel(0x00010020, &fec->eth->op_pause); /* FIXME 0xffff0020; */ @@ -996,7 +996,7 @@ static void fec_free_descs(struct fec_priv *fec) free(fec->tbd_base); } -struct mii_dev *fec_get_miibus(ulong base_addr, int dev_id) +struct mii_dev *fec_get_miibus(struct udevice *dev, ulong base_addr, int dev_id) { struct ethernet_regs *eth = (struct ethernet_regs *)base_addr; struct mii_dev *bus; @@ -1018,7 +1018,7 @@ struct mii_dev *fec_get_miibus(ulong base_addr, int dev_id) free(bus); return NULL; } - fec_mii_setspeed(eth); + fec_mii_setspeed(dev, eth); return bus; } @@ -1354,10 +1354,10 @@ static int fecmxc_probe(struct udevice *dev) if (!bus) { dm_mii_bus = false; #ifdef CONFIG_FEC_MXC_MDIO_BASE - bus = fec_get_miibus((ulong)CONFIG_FEC_MXC_MDIO_BASE, + bus = fec_get_miibus(dev, (ulong)CONFIG_FEC_MXC_MDIO_BASE, dev_seq(dev)); #else - bus = fec_get_miibus((ulong)priv->eth, dev_seq(dev)); + bus = fec_get_miibus(dev, (ulong)priv->eth, dev_seq(dev)); #endif } if (!bus) { diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index 0e45f0a0922..b39b2546e5c 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -351,6 +351,13 @@ config WDT_SBSA In the single stage mode, when the timeout is reached, your system will be reset by WS1. The first signal (WS0) is ignored. +config WDT_SIEMENS_PMIC + bool "Enable PMIC Watchdog Timer support for Siemens platforms" + depends on ARCH_IMX8 && WDT + help + Select this to enable the PMIC watchdog driver controlled via + IMX8 SCU API found on Siemens platforms. + config WDT_SL28CPLD bool "sl28cpld watchdog timer support" depends on WDT && SL28CPLD diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile index 0b107c008f7..9b6b1a8e8ad 100644 --- a/drivers/watchdog/Makefile +++ b/drivers/watchdog/Makefile @@ -45,6 +45,7 @@ obj-$(CONFIG_WDT_OCTEONTX) += octeontx_wdt.o obj-$(CONFIG_WDT_OMAP3) += omap_wdt.o obj-$(CONFIG_WDT_SBSA) += sbsa_gwdt.o obj-$(CONFIG_WDT_K3_RTI) += rti_wdt.o +obj-$(CONFIG_WDT_SIEMENS_PMIC) += siemens_pmic_wdt.o obj-$(CONFIG_WDT_SL28CPLD) += sl28cpld-wdt.o obj-$(CONFIG_WDT_SP805) += sp805_wdt.o obj-$(CONFIG_WDT_STARFIVE) += starfive_wdt.o diff --git a/drivers/watchdog/siemens_pmic_wdt.c b/drivers/watchdog/siemens_pmic_wdt.c new file mode 100644 index 00000000000..87e817bb5b2 --- /dev/null +++ b/drivers/watchdog/siemens_pmic_wdt.c @@ -0,0 +1,59 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Driver for a PMIC watchdog timer controlled via Siemens SCU firmware + * extensions. Only useful on some Siemens i.MX8-based platforms as + * special NXP SCFW is needed which provides the needed SCU API. + * + * Copyright (C) 2024 Siemens AG + */ + +#include <dm.h> +#include <wdt.h> +#include <firmware/imx/sci/sci.h> + +/* watchdog commands */ +#define CMD_START_WDT 0x55 +#define CMD_STOP_WDT 0x45 +#define CMD_PING_WDT 0x35 + +static int scu_wdt_start(struct udevice *dev, u64 timeout_ms, ulong flags) +{ + /* start external watchdog via Timer API */ + return sc_timer_control_siemens_pmic_wdog(-1, CMD_START_WDT); +} + +static int scu_wdt_stop(struct udevice *dev) +{ + /* stop external watchdog via Timer API */ + return sc_timer_control_siemens_pmic_wdog(-1, CMD_STOP_WDT); +} + +static int scu_wdt_reset(struct udevice *dev) +{ + return sc_timer_control_siemens_pmic_wdog(-1, CMD_PING_WDT); +} + +static int scu_wdt_probe(struct udevice *dev) +{ + debug("%s(dev=%p)\n", __func__, dev); + return 0; +} + +static const struct wdt_ops scu_wdt_ops = { + .reset = scu_wdt_reset, + .start = scu_wdt_start, + .stop = scu_wdt_stop, +}; + +static const struct udevice_id scu_wdt_ids[] = { + { .compatible = "siemens,scu-wdt" }, + { } +}; + +U_BOOT_DRIVER(scu_wdt) = { + .name = "scu_wdt", + .id = UCLASS_WDT, + .of_match = scu_wdt_ids, + .probe = scu_wdt_probe, + .ops = &scu_wdt_ops, +}; |