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watchdog: Add support for Tegra264

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Tegra264 use a different base address than Tegra234.

Update the logic of parsing Base Timer and WDT index from iomem resource
beginning.

Bug 4729969

Change-Id: I68d4f03373d2d648c1cf3b82bf74972361693bb5
Signed-off-by: Kartik <kkartik@nvidia.com>
This commit is contained in:
Kartik
2024-07-02 10:45:18 +00:00
committed by Jon Hunter
parent df09ef1b31
commit 0bfc29c691
1 changed files with 31 additions and 2 deletions
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33
drivers/watchdog/watchdog-tegra-t18x.c
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@@ -51,6 +51,7 @@
#define TIMER_INDEX_T186 0
#define TIMER_INDEX_T234 1
#define TIMER_INDEX_T264 2
struct tegra_wdt_t18x_soc {
bool unmask_hw_irq;
@@ -130,6 +131,8 @@ static struct tegra_wdt_t18x *to_tegra_wdt_t18x(struct watchdog_device *wdt)
#define WATCHDOG_INDEX(add) ((((add) >> 16) & 0xF) - 0xc)
#define T234_TIMER_INDEX(add) ((((add) >> 16) & 0xF) - 0x9)
#define T234_WATCHDOG_INDEX(add) ((((add) >> 16) & 0xF) - 0x9)
#define T264_TIMER_INDEX(add) ((((add) >> 16) & 0xF) - 0x1)
#define T264_WATCHDOG_INDEX(add) ((((add) >> 16) & 0xF) - 0x1)
static int __tegra_wdt_t18x_ping(struct tegra_wdt_t18x *twdt_t18x)
{
@@ -484,8 +487,22 @@ static int tegra_wdt_t18x_probe(struct platform_device *pdev)
return -EINVAL;
}
/* The second entry is the IRQ */
twdt_t18x->hwirq = oirq.args[1];
switch (twdt_t18x->soc->timer_index) {
case TIMER_INDEX_T264:
/* Read shared-interrupt. */
ret = of_property_read_u32(np, "nvidia,shared-interrupt",
&twdt_t18x->hwirq);
if (ret)
return -EINVAL;
dev_info(&pdev->dev, "using shared-interrupt-%d\n",
twdt_t18x->hwirq);
break;
default:
/* The second entry is the IRQ */
twdt_t18x->hwirq = oirq.args[1];
break;
}
twdt_t18x->enable_on_init = of_property_read_bool(np,
"nvidia,enable-on-init");
@@ -506,6 +523,9 @@ static int tegra_wdt_t18x_probe(struct platform_device *pdev)
/* WDT ID from base address */
switch (twdt_t18x->soc->timer_index) {
case TIMER_INDEX_T264:
wdt_id = T264_WATCHDOG_INDEX(res_wdt->start);
break;
case TIMER_INDEX_T234:
wdt_id = T234_WATCHDOG_INDEX(res_wdt->start);
break;
@@ -566,6 +586,9 @@ static int tegra_wdt_t18x_probe(struct platform_device *pdev)
* then adjust address.
*/
switch (twdt_t18x->soc->timer_index) {
case TIMER_INDEX_T264:
timer_id = T264_TIMER_INDEX(res_tmr->start);
break;
case TIMER_INDEX_T234:
timer_id = T234_TIMER_INDEX(res_tmr->start);
break;
@@ -806,6 +829,11 @@ static const struct dev_pm_ops tegra_wdt_t18x_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(tegra_wdt_t18x_suspend, tegra_wdt_t18x_resume)
};
static const struct tegra_wdt_t18x_soc t264_wdt_silicon = {
.unmask_hw_irq = true,
.timer_index = TIMER_INDEX_T264,
};
static const struct tegra_wdt_t18x_soc t234_wdt_silicon = {
.unmask_hw_irq = true,
.timer_index = TIMER_INDEX_T234,
@@ -822,6 +850,7 @@ static const struct tegra_wdt_t18x_soc t18x_wdt_sim = {
};
static const struct of_device_id tegra_wdt_t18x_match[] = {
{ .compatible = "nvidia,tegra-wdt-t264", .data = &t264_wdt_silicon},
{ .compatible = "nvidia,tegra-wdt-t234", .data = &t234_wdt_silicon},
{ .compatible = "nvidia,tegra-wdt-t19x", .data = &t18x_wdt_silicon},
{ .compatible = "nvidia,tegra-wdt-t18x", .data = &t18x_wdt_silicon},