Issue #501 has been reported by Timo J..
---------------------------------------- Support #501: Adding Hybrid GPU mode to my Clevo PC70HR (System76 Oryp 8) https://ticket.coreboot.org/issues/501
* Author: Timo J. * Status: New * Priority: Low * Category: chipset configuration * Target version: master * Start date: 2023-07-31 * Affected versions: master * Needs backport to: master * Related links: https://www.e-weekly.co.uk/download/rnd/drivers/clevo/pcxxhxx/esm7.pdf https://www.coreboot.org/Board:lenovo/Nvidia_Optimus https://github.com/coreboot/coreboot/tree/master/src/mainboard/system76/tgl-... https://github.com/coreboot/coreboot/tree/master/src/mainboard/lenovo/t430 * Affected hardware: Clevo PC70HR ---------------------------------------- Hello there
I'm trying to add support for the GPU MUX in my notebook but, i also seen it implemented in the Lenovo notebooks, and the GPIO also seems to be registered in my notebook, but it didn't take any use of it.
in the file "coreboot/src/mainboard/system76/tgl-h/variants/oryp8/gpio.c" is following to find ` PAD_CFG_GPI(GPP_R16, NONE, DEEP), // BL_PWM_EN_EC PAD_CFG_GPI(GPP_R17, NONE, DEEP), // PLVDD_RST_EC PAD_CFG_GPI(GPP_R18, NONE, DEEP), // MUX_CTRL_BIOS PAD_CFG_GPI(GPP_R19, NONE, DEEP), // PS8461_SW`
soo the GPIOs for the MUX exist and from the schematics i can see the MUX and how its connected 
the Lenovo T430 got this in its devicetree.cb
` chip drivers/lenovo/hybrid_graphics device pnp ff.f on end # dummy register "detect_gpio" = "21" register "has_panel_hybrid_gpio" = "1" register "panel_hybrid_gpio" = "52" register "panel_integrated_lvl" = "1" register "has_backlight_gpio" = "0" register "has_dgpu_power_gpio" = "0" register "has_thinker1" = "1" end`
but mine doesn't
can you someone of you maybe give me a little advise how to do it? i really don't wanna break anything.
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