watchdog: qcom: introduce the device data for IPQ5424 watchdog device

To retrieve the restart reason from IMEM, certain device specific data
like IMEM compatible to lookup, location of IMEM to read, etc should be
defined. To achieve that, introduce the separate device data for IPQ5424
and add the required details subsequently.

Signed-off-by: Kathiravan Thirumoorthy <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Guenter Roeck <[email protected]>
Signed-off-by: Wim Van Sebroeck <[email protected]>

Author: Kathiravan Thirumoorthy

drivers/watchdog/qcom-wdt.c

@@ -181,6 +181,12 @@ static const struct qcom_wdt_match_data match_data_apcs_tmr = {
 	.max_tick_count = 0x10000000U,
 };
 
+static const struct qcom_wdt_match_data match_data_ipq5424 = {
+	.offset = reg_offset_data_kpss,
+	.pretimeout = true,
+	.max_tick_count = 0xFFFFFU,
+};
+
 static const struct qcom_wdt_match_data match_data_kpss = {
 	.offset = reg_offset_data_kpss,
 	.pretimeout = true,
@@ -322,6 +328,7 @@ static const struct dev_pm_ops qcom_wdt_pm_ops = {
 };
 
 static const struct of_device_id qcom_wdt_of_table[] = {
+	{ .compatible = "qcom,apss-wdt-ipq5424", .data = &match_data_ipq5424 },
 	{ .compatible = "qcom,kpss-timer", .data = &match_data_apcs_tmr },
 	{ .compatible = "qcom,scss-timer", .data = &match_data_apcs_tmr },
 	{ .compatible = "qcom,kpss-wdt", .data = &match_data_kpss },