[PATCH 3/4] OMAPDSS: panel-sharp-ls037v7dw01: add device tree support
From: Tomi Valkeinen <hidden>
Date: 2014-05-07 08:12:23
Also in:
linux-devicetree, linux-fbdev, linux-omap
On 30/04/14 02:52, Tony Lindgren wrote:
quoted hunk ↗ jump to hunk
We can pass the GPIO configuration for ls037v7dw01 in a standard gpios property. Signed-off-by: Tony Lindgren <tony@atomide.com> --- .../bindings/panel/sharp,ls037v7dw01.txt | 53 ++++++++++++++ .../omap2/displays-new/panel-sharp-ls037v7dw01.c | 84 ++++++++++++++++++++-- 2 files changed, 133 insertions(+), 4 deletions(-) create mode 100644 Documentation/devicetree/bindings/panel/sharp,ls037v7dw01.txtdiff --git a/Documentation/devicetree/bindings/panel/sharp,ls037v7dw01.txt b/Documentation/devicetree/bindings/panel/sharp,ls037v7dw01.txt new file mode 100644 index 0000000..7f6f5e1 --- /dev/null +++ b/Documentation/devicetree/bindings/panel/sharp,ls037v7dw01.txt@@ -0,0 +1,53 @@ +SHARP LS037V7DW01 TFT-LCD panel + +Required properties: +- compatible: should be "sharp,ls037v7dw01" + +Optional properties: +- reset-gpios: a GPIO spec for the optional reset pin +- enable-gpios: a GPIO array for the optional configuration GPIOs + ordered MO, LR, UD, INI as specified in the LS037V7DW01.pdf file. + +This binding is compatible with the simple-panel binding, which is specified +in simple-panel.txt in this directory. + +This panel can have zero to five GPIOs to configure +to change configuration between QVGA and VGA mode +and the scan direction. As these pins can be also +configured with external pulls, all the GPIOs are +considered optional with holes in the array. + +Example when connected to a omap2+ based device: + + lcd0: display { + compatible = "sharp,ls037v7dw01"; + power-supply = <&lcd_3v3>; + reset-gpios = <&gpio5 27 GPIO_ACTIVE_HIGH>; /* gpio155, lcd RESB */ + enable-gpios = <&gpio5 26 GPIO_ACTIVE_HIGH /* gpio154, lcd MO */ + &gpio1 2 GPIO_ACTIVE_HIGH /* gpio2, lcd LR */ + &gpio1 3 GPIO_ACTIVE_HIGH /* gpio3, lcd UD */ + &gpio5 24 GPIO_ACTIVE_HIGH>; /* gpio152, lcd INI */
Why are most of the gpios in 'enable-gpios'? MO, LR and UD don't really have anything to do with enabling the panel. Why not just have one 'gpios' array with all the gpios, as they are quite a mixed bunch? Tomi -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: OpenPGP digital signature URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20140507/0847648a/attachment.sig>