bus: ti-sysc: Ignore timer12 on secure omap3

Some early omap3 boards use timer12 for system timer, but for secure
SoCs like on n900 it's not accessible. Likely we will be configuring
unavailable devices for other SoCs too based on runtime SoC detection,
so let's use a switch to start with.

Cc: Grygorii Strashko <[email protected]>
Cc: Keerthy <[email protected]>
Cc: Lokesh Vutla <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Tero Kristo <[email protected]>
Signed-off-by: Tony Lindgren <[email protected]>

Author: tmlind

drivers/bus/ti-sysc.c

@@ -2744,6 +2744,17 @@ static int sysc_init_soc(struct sysc *ddata)
 	if (match && match->data)
 		sysc_soc->soc = (int)match->data;
 
+	/* Ignore devices that are not available on HS and EMU SoCs */
+	if (!sysc_soc->general_purpose) {
+		switch (sysc_soc->soc) {
+		case SOC_3430 ... SOC_3630:
+			sysc_add_disabled(0x48304000);	/* timer12 */
+			break;
+		default:
+			break;
+		};
+	}
+
 	match = soc_device_match(sysc_soc_feat_match);
 	if (!match)
 		return 0;