Messages in this thread Patch in this message | | | Date | Fri, 25 Nov 2022 18:44:18 +0100 | From | Otto Pflüger <> | Subject | [PATCH 2/4] drm/tiny: Read separate I/O regulator from DT |
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Some platforms have a separate vddi supply for the panel I/O interface (as defined by the MIPI DBI specification), so one power-supply is not enough. Introduce a new "io-supply" property to set the vddi regulator.
After getting the regulator specified the device tree, use the new io_regulator property of the DBI device so that the drm_mipi_dbi driver can enable it.
Signed-off-by: Otto Pflüger <affenull2345@gmail.com> --- 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 03a7d569cd56..b09d2a47a409 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
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