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mfd: bcm2835-pm: Introduce SoC-specific type identifier

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Power management blocks across the BCM2835 family share a common
base but require variant-specific handling. For instance, the
BCM2712 lacks ASB register space, yet it manages the power domain
for the V3D graphics block.

Add a hardware type identifier to the driver's private data. This
allows the driver to distinguish between SoC models and implement
custom quirks or features as needed.

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
Co-developed-by: Stanimir Varbanov <svarbanov@suse.de>
Signed-off-by: Stanimir Varbanov <svarbanov@suse.de>
Signed-off-by: Andrea della Porta <andrea.porta@suse.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/c4bb218654e91f312a01b419d3d408e5131f7673.1772839224.git.andrea.porta@suse.com
Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
Phil Elwell 2026-03-07 00:41:21 +01:00 committed by Lee Jones
parent c7be85a3cd
commit fe0e422cbc
2 changed files with 11 additions and 3 deletions
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7
drivers/mfd/bcm2835-pm.c
View File

@ -81,6 +81,7 @@ static int bcm2835_pm_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, pm);
pm->dev = dev;
pm->soc = (uintptr_t)device_get_match_data(dev);
ret = bcm2835_pm_get_pdata(pdev, pm);
if (ret)
@ -106,9 +107,9 @@ static int bcm2835_pm_probe(struct platform_device *pdev)
static const struct of_device_id bcm2835_pm_of_match[] = {
{ .compatible = "brcm,bcm2835-pm-wdt", },
{ .compatible = "brcm,bcm2835-pm", },
{ .compatible = "brcm,bcm2711-pm", },
{ .compatible = "brcm,bcm2712-pm", },
{ .compatible = "brcm,bcm2835-pm", .data = (void *)BCM2835_PM_SOC_BCM2835 },
{ .compatible = "brcm,bcm2711-pm", .data = (void *)BCM2835_PM_SOC_BCM2711 },
{ .compatible = "brcm,bcm2712-pm", .data = (void *)BCM2835_PM_SOC_BCM2712 },
{},
};
MODULE_DEVICE_TABLE(of, bcm2835_pm_of_match);

7
include/linux/mfd/bcm2835-pm.h
View File

@ -5,11 +5,18 @@
#include <linux/regmap.h>
enum bcm2835_soc {
BCM2835_PM_SOC_BCM2835,
BCM2835_PM_SOC_BCM2711,
BCM2835_PM_SOC_BCM2712,
};
struct bcm2835_pm {
struct device *dev;
void __iomem *base;
void __iomem *asb;
void __iomem *rpivid_asb;
enum bcm2835_soc soc;
};
#endif /* BCM2835_MFD_PM_H */