Re: [PATCH 1/2] arm64: dts: qcom: monaco: add lt8713sx bridge with displayport
From: Vishnu Saini
Date: Fri Dec 19 2025 - 07:59:09 EST
On Fri, Dec 19, 2025 at 01:10:19PM +0100, Konrad Dybcio wrote:
> On 12/19/25 12:20 PM, Vishnu Saini wrote:
> > On Thu, Nov 20, 2025 at 01:11:00PM +0100, Konrad Dybcio wrote:
> >> On 11/20/25 11:58 AM, Vishnu Saini wrote:
> >>> Monaco-evk has LT8713sx which act as DP to 3 DP output
> >>> converter. Edp PHY from monaco soc is connected to lt8713sx
> >>> as input and output of lt8713sx is connected to 3 mini DP ports.
> >>> Two of these ports are available in mainboard and one port
> >>> is available on Mezz board. lt8713sx is connected to soc over
> >>> i2c0 and with reset gpio connected to pin6 or ioexpander5.
> >>>
> >>> Enable the edp nodes from monaco and enable lontium lt8713sx
> >>> bridge node.
> >>>
> >>> Co-developed-by: Prahlad Valluru <vvalluru@xxxxxxxxxxxxxxxx>
> >>> Signed-off-by: Prahlad Valluru <vvalluru@xxxxxxxxxxxxxxxx>
> >>> Signed-off-by: Vishnu Saini <vishnu.saini@xxxxxxxxxxxxxxxx>
> >>> ---
>
> [...]
>
> >>> + qup_i2c0_default: qup-i2c0-state {
> >>> + pins = "gpio17", "gpio18";
> >>> + function = "qup0_se0";
> >>> + drive-strength = <2>;
> >>> + bias-pull-up;
> >>
> >> Similarly, you can move these settings to monaco.dtsi and keep them as
> >> defaults since 99.99% of I2C users will share them
> > Is it ok if i update this in a different series, similar other nodes like qup_i2c1_default
> > added in monaco-evk.dts?
>
> No, I don't want you to introduce something "wrong" only because you
> don't want to run git commit --amend
>
> I see you've now sent a v2 just 7 minutes after asking this question.
> Should I interpret that as you expecting me to drop everything and rush
> to respond to your queries immediately, or do you not care about my
> feedback anyway?
Apologies, for quickly raising the new patch, i thought of correcting this
in next V3 patch if you ask for.
I am new contributor to the upstream community, just now i setup mutt and learned a bit about
sending reply to the emails and V2 patch was already validated that's why i submitted it.
monaco.dtsi already have below node except drive-strength and bias-pull-up.
tlmm {
qup_i2c0_data_clk: qup-i2c0-data-clk-state {
pins = "gpio17", "gpio18";
function = "qup0_se0";
};
};
I will add drive-strength and bias-pull-up in monaco-evk.dts, let me know if this is ok?
> Konrad