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bus: ti-sysc: Support modules without control registers 

Some modules like MPU have a powerdomain and functional clock but not
necessarily any control registers. Let's allow configuring interconnect
target modules with no control registers.

Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Tony Lindgren 2020-11-16 12:57:13 +02:00
parent ae5f70f707
commit 2928135c93
1 changed files with 7 additions and 0 deletions
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7
drivers/bus/ti-sysc.c
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@ -853,8 +853,12 @@ static int sysc_ioremap(struct sysc *ddata)
*/
static int sysc_map_and_check_registers(struct sysc *ddata)
{
struct device_node *np = ddata->dev->of_node;
int error;
if (!of_get_property(np, "reg", NULL))
return 0;
error = sysc_parse_and_check_child_range(ddata);
if (error)
return error;
@ -2911,6 +2915,9 @@ static int sysc_probe(struct platform_device *pdev)
if (!ddata)
return -ENOMEM;
ddata->offsets[SYSC_REVISION] = -ENODEV;
ddata->offsets[SYSC_SYSCONFIG] = -ENODEV;
ddata->offsets[SYSC_SYSSTATUS] = -ENODEV;
ddata->dev = &pdev->dev;
platform_set_drvdata(pdev, ddata);