reset: socfpga: add an early reset driver for SoCFPGA
Create a separate reset driver that uses the reset operations in reset-simple. The reset driver for the SoCFPGA platform needs to register early in order to be able bring online timers that needed early in the kernel bootup. We do not need this early reset driver for Stratix10, because on arm64, Linux does not need the timers are that in reset. Linux is able to run just fine with the internal armv8 timer. Thus, we use a new binding "altr,stratix10-rst-mgr" for the Stratix10 platform. The Stratix10 platform will continue to use the reset-simple platform driver, while the 32-bit platforms(Cyclone5/Arria5/Arria10) will use the early reset driver. Signed-off-by: Dinh Nguyen <dinguyen@kernel.org> [p.zabel@pengutronix.de: fixed socfpga of_device_id in reset-simple] Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:

committed by
Philipp Zabel

parent
151f72f493
commit
b3ca9888f3
@@ -109,7 +109,7 @@ struct reset_simple_devdata {
|
||||
#define SOCFPGA_NR_BANKS 8
|
||||
|
||||
static const struct reset_simple_devdata reset_simple_socfpga = {
|
||||
.reg_offset = 0x10,
|
||||
.reg_offset = 0x20,
|
||||
.nr_resets = SOCFPGA_NR_BANKS * 32,
|
||||
.status_active_low = true,
|
||||
};
|
||||
@@ -120,7 +120,8 @@ static const struct reset_simple_devdata reset_simple_active_low = {
|
||||
};
|
||||
|
||||
static const struct of_device_id reset_simple_dt_ids[] = {
|
||||
{ .compatible = "altr,rst-mgr", .data = &reset_simple_socfpga },
|
||||
{ .compatible = "altr,stratix10-rst-mgr",
|
||||
.data = &reset_simple_socfpga },
|
||||
{ .compatible = "st,stm32-rcc", },
|
||||
{ .compatible = "allwinner,sun6i-a31-clock-reset",
|
||||
.data = &reset_simple_active_low },
|
||||
@@ -166,14 +167,6 @@ static int reset_simple_probe(struct platform_device *pdev)
|
||||
data->status_active_low = devdata->status_active_low;
|
||||
}
|
||||
|
||||
if (of_device_is_compatible(dev->of_node, "altr,rst-mgr") &&
|
||||
of_property_read_u32(dev->of_node, "altr,modrst-offset",
|
||||
®_offset)) {
|
||||
dev_warn(dev,
|
||||
"missing altr,modrst-offset property, assuming 0x%x!\n",
|
||||
reg_offset);
|
||||
}
|
||||
|
||||
data->membase += reg_offset;
|
||||
|
||||
return devm_reset_controller_register(dev, &data->rcdev);
|
||||
|
Reference in New Issue
Block a user