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thermal: imx_tmu: Fix the polling default

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When the 'polling-delay' property is not passed via devicetree,
pdata->polling_delay keeps at 0. This causes the imx_tmu driver to get
stuck inside the busy while() loop when the CPU temperature is above
the alert point.

Fix this problem by passing a one second polling interval, which provides
a proper delay to let the system to cool down and exit the while() loop
when the temperature is below the alert point.

Signed-off-by: Fabio Estevam <festevam@denx.de>
This commit is contained in:
Fabio Estevam 2023-08-23 14:59:08 -03:00 • committed by Stefano Babic
parent 282ff895c8
commit 402b8106ec
1 changed files with 5 additions and 1 deletions
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6
drivers/thermal/imx_tmu.c
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@ -37,6 +37,7 @@ DECLARE_GLOBAL_DATA_PTR;
#define TER_ADC_PD 0x40000000
#define TER_ALPF 0x3
#define IMX_TMU_POLLING_DELAY_MS 1000
/*
* i.MX TMU Registers
*/
@ -574,6 +575,8 @@ static int imx_tmu_parse_fdt(struct udevice *dev)
dev_dbg(dev, "%s\n", __func__);
pdata->polling_delay = IMX_TMU_POLLING_DELAY_MS;
if (pdata->zone_node) {
pdata->regs = (union tmu_regs *)dev_read_addr_ptr(dev);
@ -602,7 +605,8 @@ static int imx_tmu_parse_fdt(struct udevice *dev)
dev_dbg(dev, "args.args_count %d, id %d\n", args.args_count, pdata->id);
pdata->polling_delay = dev_read_u32_default(dev, "polling-delay", 1000);
pdata->polling_delay = dev_read_u32_default(dev, "polling-delay",
IMX_TMU_POLLING_DELAY_MS);
trips_np = ofnode_path("/thermal-zones/cpu-thermal/trips");
ofnode_for_each_subnode(trips_np, trips_np) {