tenderloin: Get mainline kernel working

[Herrie82]

Seeing 3.4 kernels are really EOL now by the looks of it, we need to get our 3.4 targets (mako, hammerhead, tenderloin) working with mainline kernel.

There were various attempts done in the past: https://github.com/mboudr35/hp-touchpad-linux https://github.com/lopsided98/linux/tree/hp-tenderloin https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git/log/?h=apq8060-dragonboard-graphics https://github.com/shr-distribution/linux/tree/tenderloin/5.19/mainline

Steps:

1. Submit missing bits to upstream kernel for consideration:

• mmcc bindings: https://patchwork.kernel.org/project/linux-arm-msm/patch/20240417-msm8660-mmcc-v1-1-efc9e455268c@herrie.org/

• dt-bindings: phy: qcom,usb-hs-phy: Add compatible: https://patchwork.kernel.org/project/linux-arm-msm/patch/20240417065454.3599824-1-github.com@herrie.org/

• dt-bindings: mfd: qcom: pm8xxx: Add pm8901 compatible: https://patchwork.kernel.org/project/linux-arm-msm/patch/20240415123038.1526386-1-github.com@herrie.org/

• mfd: pm8xxx: add support for PM8901: https://patchwork.kernel.org/project/linux-arm-msm/patch/20240415123941.1527938-1-github.com@herrie.org/

• dt-bindings: pinctrl: qcom,pmic-mpp: add support for PM8901: https://patchwork.kernel.org/project/linux-arm-msm/patch/20240417073532.3718510-1-github.com@herrie.org/

• pinctrl: qcom-ssbi: add support for PM8901: https://patchwork.kernel.org/project/linux-arm-msm/patch/20240415141814.1983384-1-github.com@herrie.org/

-max8903b charger: https://github.com/lopsided98/linux/commit/48bbbe4d44cbf6f214c563d5ba4e2225b49c775a

• Work out mmcc clocks: https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git/commit/?h=apq8060-dragonboard-graphics&id=ac84ded5906d9e932789122a5dcbdaab0cc95ee6 (non-working?) and https://github.com/mboudr35/hp-touchpad-linux/commit/bc754423af6d851766973b35f9a8890e38478ffb (partially working? )

• Implement hacks properly: https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git/commit/?h=apq8060-dragonboard-graphics&id=811e01bbf43c62b7ffabc01fc1d3e6880057a5b4 and https://github.com/mboudr35/hp-touchpad-linux/commit/ff35130647ee7c7bb592781290ba0cd6ce21e589

• Rework LEDS LPG to general framework: https://github.com/mboudr35/hp-touchpad-linux/commit/5d442f5daf5a26326fd493d72abe42f294e9d3fe and https://github.com/mboudr35/hp-touchpad-linux/commit/1f911a1868d68b42644d842d061841a7c8a25faf

2. Update the device tree, validate and submit upstream. Examples: https://github.com/mboudr35/hp-touchpad-linux/blob/tenderloin-5.15/arch/arm/boot/dts/qcom-apq8060-tenderloin.dts https://github.com/lopsided98/linux/blob/hp-tenderloin/arch/arm/boot/dts/qcom-apq8060-tenderloin.dts

[Herrie82]

Various schematics (mainly Opal and Topaz 3G, so no Topaz WiFi only) Schematics-Opal.6050A2430401.rX01.pdf Schematics-Opal_6050A2430401-mb_dvt_0704.pdf Schematics-Topaz3G-6050A2428701-MB-X01.20101012.pdf Tech-Specs-hptouchpad-120110090301-phpapp02 (1).pdf Cypress Portfolio.pdf