[PATCH v2 2/3] drm/tiny: panel-mipi-dbi: Read I/O supply from DT

[Otto Pflüger]

To support platforms with a separate I/O voltage supply, set the new
io_regulator property along with the regulator property of the DBI
device. Read the I/O supply from a new "io-supply" device tree
property.

Signed-off-by: Otto Pflüger <otto.pflue...@abscue.de>
---
 drivers/gpu/drm/tiny/panel-mipi-dbi.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/tiny/panel-mipi-dbi.c 
b/drivers/gpu/drm/tiny/panel-mipi-dbi.c
index 955a61d628e7..353356ee0397 100644
--- a/drivers/gpu/drm/tiny/panel-mipi-dbi.c
+++ b/drivers/gpu/drm/tiny/panel-mipi-dbi.c
@@ -297,6 +297,11 @@ static int panel_mipi_dbi_spi_probe(struct spi_device *spi)
                return dev_err_probe(dev, PTR_ERR(dbidev->regulator),
                                     "Failed to get regulator 'power'\n");
 
+       dbidev->io_regulator = devm_regulator_get(dev, "io");
+       if (IS_ERR(dbidev->io_regulator))
+               return dev_err_probe(dev, PTR_ERR(dbidev->io_regulator),
+                                    "Failed to get regulator 'io'\n");
+
        dbidev->backlight = devm_of_find_backlight(dev);
        if (IS_ERR(dbidev->backlight))
                return dev_err_probe(dev, PTR_ERR(dbidev->backlight), "Failed 
to get backlight\n");
-- 
2.30.2