#linux-rockchip on 2024-09-03 — irc logs at libera.irclog.whitequark.org

2023-07-10 07:36 mmind00 changed the topic of #linux-rockchip to: Rockchip development discussion | public log at https://libera.irclog.whitequark.org/linux-rockchip

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04:57 <naoki> about pinctrl for pcie, which is correct?

04:57 <naoki> 1. just define reset pin like rock-5b

04:57 <naoki> 2. refer -pinctrl.dtsi e.g. pcie20x1m0_pins like rock-5a

05:01 <naoki> ah rock-5a is not good example

05:02 <naoki> e.g. pcie2x1 and pcie3x2 in rock 3a

05:56 <naoki> I think all 3 pins are claimed for pcie

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06:03 <naoki> ^should be claimed

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07:11 <naoki> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi#n129

07:11 <naoki> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/rockchip/rk3399-rock-4se.dts#n60

07:11 <naoki> I cannot find difference...

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07:29 <naoki> sha256sum confirm it...

08:06 <Kwiboo> naoki: ahh, you are already working on a rock-5c DT?, I missed that and started playing around with a DT after playing with the odroid-m2 one: https://github.com/kwiboo/linux-rockchip/commits/rk3588s-rock-5c-v1 and https://github.com/Kwiboo/u-boot-rockchip/commits/rk3xxx-2024.10/

08:08 <Kwiboo> however using mainline the 5c give a small hissing sound, something using vendor image does not, so I will let you finish up and back off on rock-5c :-)

08:14 <naoki> Kwiboo: https://github.com/RadxaNaoki/linux/commits/wip/rock-5c/ https://github.com/RadxaNaoki/linux/commits/wip/rock-5c/

08:14 <naoki> I'll check your DT

08:17 <Kwiboo> naoki: for pcie I recommend creating a custom pinconf group: similar to https://github.com/Kwiboo/linux-rockchip/blob/rk3588s-rock-5c-v1/arch/arm64/boot/dts/rockchip/rk3588s-rock-5c.dts#L411-L416

08:19 <naoki> I think so :) (but what's the purpose of -pinctrl.dtsi ;)

08:22 <Kwiboo> the issue is that the reset pin is described as pcie function not gpio function and that cause issue for u-boot, system freeze

08:22 <Kwiboo> linux will change the pin to gpio function when the reset-gpios is requested, u-boot does not, so pinctrl must describe it as gpio func from start

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08:59 <naoki> oh I forgot to write about microSD CD with vendor kernel

08:59 <naoki> I can't believe it doesn't work

09:00 <naoki> I'll do 5C things tomorrow...

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