The VCU provides information about its configuration in a dedicated
register space. These settings include, for example, the expected clock
rates and the configuration of the encoder buffer. In the device tree,
the settings are described by the "xlnx,vcu-settings" compatible.
The settings are needed to correctly configure the clocks and the
encoder buffer.
Lookup the VCU settings in the device tree and make it accessible to the
driver via a regmap.
Signed-off-by: Michael Tretter <m.tretter@xxxxxxxxxxxxxx>
---
drivers/media/platform/allegro-dvt/allegro-core.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/media/platform/allegro-dvt/allegro-core.c b/drivers/media/platform/allegro-dvt/allegro-core.c
index 89d6de6082f6..2663d9da0522 100644
--- a/drivers/media/platform/allegro-dvt/allegro-core.c
+++ b/drivers/media/platform/allegro-dvt/allegro-core.c
@@ -12,6 +12,8 @@
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/log2.h>
+#include <linux/mfd/syscon.h>
+#include <linux/mfd/syscon/xlnx-vcu.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
@@ -136,6 +138,7 @@ struct allegro_dev {
struct regmap *regmap;
struct regmap *sram;
+ struct regmap *settings;
const struct fw_info *fw_info;
struct allegro_buffer firmware;
@@ -3721,6 +3724,10 @@ static int allegro_probe(struct platform_device *pdev)
return PTR_ERR(dev->sram);
}
+ dev->settings = syscon_regmap_lookup_by_compatible("xlnx,vcu-settings");
+ if (IS_ERR(dev->settings))
+ dev_warn(&pdev->dev, "failed to open settings\n");
+
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
--
2.30.2
