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dt-bindings: gnss: Add two more chips

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The CSR GSD4t is a CSR product using the SiRFstarIV core, and
the CSR CSRG05TA03-ICJE-R is a CSR product using the SiRFstarV
core.

These chips have a SRESETN line that can be pulled low to hard
reset the chip and in some designs this is connected to a GPIO,
so add this as an optional property.

Update the example with a reset line so users see that it need
to be tagged as active low.

Cc: devicetree@vger.kernel.org
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220317225844.1262643-4-linus.walleij@linaro.org
This commit is contained in:
Linus Walleij 2022-03-17 23:58:43 +01:00 committed by Rob Herring
parent 5505409e42
commit 094b10cb79
1 changed files with 8 additions and 0 deletions
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8
Documentation/devicetree/bindings/gnss/sirfstar.yaml
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@ -25,6 +25,8 @@ allOf:
properties: properties:
compatible: compatible:
enum: enum:
- csr,gsd4t
- csr,csrg05ta03-icje-r
- fastrax,uc430 - fastrax,uc430
- linx,r4 - linx,r4
- wi2wi,w2sg0004 - wi2wi,w2sg0004
@ -39,6 +41,11 @@ properties:
description: description:
Main voltage regulator, pin names such as 3V3_IN, VCC, VDD. Main voltage regulator, pin names such as 3V3_IN, VCC, VDD.
reset-gpios:
maxItems: 1
description: An optional active low reset line, should be flagged with
GPIO_ACTIVE_LOW.
sirf,onoff-gpios: sirf,onoff-gpios:
maxItems: 1 maxItems: 1
description: GPIO used to power on and off device, pin name ON_OFF. description: GPIO used to power on and off device, pin name ON_OFF.
@ -61,6 +68,7 @@ examples:
gnss { gnss {
compatible = "wi2wi,w2sg0084i"; compatible = "wi2wi,w2sg0084i";
vcc-supply = <&gnss_vcc_reg>; vcc-supply = <&gnss_vcc_reg>;
reset-gpios = <&gpio0 15 GPIO_ACTIVE_LOW>;
sirf,onoff-gpios = <&gpio0 16 GPIO_ACTIVE_HIGH>; sirf,onoff-gpios = <&gpio0 16 GPIO_ACTIVE_HIGH>;
sirf,wakeup-gpios = <&gpio0 17 GPIO_ACTIVE_HIGH>; sirf,wakeup-gpios = <&gpio0 17 GPIO_ACTIVE_HIGH>;
current-speed = <38400>; current-speed = <38400>;