On 17/07/2023 00:05, Markuss Broks wrote:
> Add placeholders for peripherals which we currently lack support for.
> This includes Maxim MAX86900 heart rate sensor and oximeter, which
> seems to be similar to other health sensors by Maxim, but it is not
> fully compatible; STM32F401 MCU which acts like a sensor hub,
> which can be flashed and controlled via the SPI bus, for which I made
> some simple firmware to check if it's possible to program with custom
> code, and it appears you can do so, but at the moment kernel lacks
> the APIs to either control sensors directly through the MCU or any
> standards for a sensor hub, so it's laid off; WM5110 audio codec which
> fails to communicate for some reason.
>
> Signed-off-by: Markuss Broks <markuss.broks@xxxxxxxxx>
> ---
> arch/arm/boot/dts/exynos5422-samsung-k3g.dts | 18 ++++++++++++++++++
> 1 file changed, 18 insertions(+)
>
> diff --git a/arch/arm/boot/dts/exynos5422-samsung-k3g.dts b/arch/arm/boot/dts/exynos5422-samsung-k3g.dts
> index 813dbf0438de..e019b630db94 100644
> --- a/arch/arm/boot/dts/exynos5422-samsung-k3g.dts
> +++ b/arch/arm/boot/dts/exynos5422-samsung-k3g.dts
> @@ -743,6 +743,24 @@ rmi4-f12@12 {
> };
> };
>
> +&i2c_3 {
> + status = "okay";
> +
> + /* Maxim MAX86900 heart rate sensor and oximeter on address 0x57 */
> +};
> +
> +&spi_0 {
The node overrides/extends are ordered by name.
Best regards,
Krzysztof
