diff mbox series

[V4,07/11] mfd: bcm2835-pm: Add support for BCM2711

Message ID 20220625113619.15944-8-stefan.wahren@i2se.com (mailing list archive)
State New, archived
Headers show
Series soc: bcm2835-power: Prepare BCM2711 V3D support | expand

Commit Message

Stefan Wahren June 25, 2022, 11:36 a.m. UTC 
In BCM2711 the new RPiVid ASB took over V3D. The old ASB is still present
with the ISP and H264 bits, and V3D is in the same place in the new ASB
as the old one.

As per the devicetree bindings, BCM2711 will provide both the old and
new ASB resources, so get both of them and pass them into
'bcm2835-power,' which will take care of selecting which one to use
accordingly.

Since the RPiVid ASB's resources were being provided prior to formalizing
the bindings[1], also support the old DT files that didn't use
'reg-names.'

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Peter Robinson <pbrobinson@gmail.com>

[1] See: 7dbe8c62ceeb ("ARM: dts: Add minimal Raspberry Pi 4 support")
---
 drivers/mfd/bcm2835-pm.c       | 13 +++++++++++++
 include/linux/mfd/bcm2835-pm.h |  1 +
 2 files changed, 14 insertions(+)

Comments

Florian Fainelli June 28, 2022, 4:24 p.m. UTC | #1 
On 6/25/22 04:36, Stefan Wahren wrote:
> In BCM2711 the new RPiVid ASB took over V3D. The old ASB is still present
> with the ISP and H264 bits, and V3D is in the same place in the new ASB
> as the old one.
> 
> As per the devicetree bindings, BCM2711 will provide both the old and
> new ASB resources, so get both of them and pass them into
> 'bcm2835-power,' which will take care of selecting which one to use
> accordingly.
> 
> Since the RPiVid ASB's resources were being provided prior to formalizing
> the bindings[1], also support the old DT files that didn't use
> 'reg-names.'
> 
> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
> Reviewed-by: Peter Robinson <pbrobinson@gmail.com>

Acked-by: Florian Fainelli <f.fainelli@gmail.com>
diff mbox series

Patch

diff --git a/drivers/mfd/bcm2835-pm.c b/drivers/mfd/bcm2835-pm.c
index 418c8a16427d..49cd1f03884a 100644
--- a/drivers/mfd/bcm2835-pm.c
+++ b/drivers/mfd/bcm2835-pm.c
@@ -42,6 +42,14 @@  static int bcm2835_pm_get_pdata(struct platform_device *pdev,
 				pm->asb = NULL;
 		}
 
+		res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+						    "rpivid_asb");
+		if (res) {
+			pm->rpivid_asb = devm_ioremap_resource(&pdev->dev, res);
+			if (IS_ERR(pm->rpivid_asb))
+				pm->rpivid_asb = NULL;
+		}
+
 		return 0;
 	}
 
@@ -54,6 +62,10 @@  static int bcm2835_pm_get_pdata(struct platform_device *pdev,
 	if (IS_ERR(pm->asb))
 		pm->asb = NULL;
 
+	pm->rpivid_asb = devm_platform_ioremap_resource(pdev, 2);
+	if (IS_ERR(pm->rpivid_asb))
+		pm->rpivid_asb = NULL;
+
 	return 0;
 }
 
@@ -95,6 +107,7 @@  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", },
 	{},
 };
 MODULE_DEVICE_TABLE(of, bcm2835_pm_of_match);
diff --git a/include/linux/mfd/bcm2835-pm.h b/include/linux/mfd/bcm2835-pm.h
index ed37dc40e82a..f70a810c55f7 100644
--- a/include/linux/mfd/bcm2835-pm.h
+++ b/include/linux/mfd/bcm2835-pm.h
@@ -9,6 +9,7 @@  struct bcm2835_pm {
 	struct device *dev;
 	void __iomem *base;
 	void __iomem *asb;
+	void __iomem *rpivid_asb;
 };
 
 #endif /* BCM2835_MFD_PM_H */