This series adds support for booting mainline Linux on the Samsung Galaxy S4 Mini Value Edition. The device is based on the Qualcomm MSM8916 SoC and quite similar to the already supported Samsung Galaxy A3/A5. With some additional patches it is almost fully functional, including display, touch screen, GPU, audio, modem (voice calls, SMS, mobile data) and sensors. I made most of the patches almost 2 years ago but I was long unsure if I should submit them upstream. This is because the device has one big limitation: Samsung released it with a signed 32-bit-only TrustZone firmware which is not able to boot ARM64 Linux. This means the device can actually only boot ARM32. However, since device trees are independent of the kernel architecture and all the necessary drivers compile on ARM32 as well it is actually extremely straightforward to build an ARM32 kernel for MSM8916 (which is normally arm64). The only necessary additions are for SMP/cpuidle without PSCI on ARM32. However, the diffstat below makes it quite obvious that the maintenance overhead for this is absolutely negligible. The SoC is almost identical to previous 32-bit SoCs like MSM8226, so it is pretty much just adding new definitions/compatibles for already existing code. Being able to boot ARM32 Linux on MSM8916 might be also a possible opportunity for CI systems. At the moment, 32-bit Qualcomm platforms are not very well represented there. Booting ARM32 on MSM8916/APQ8016 would allow re-using the DragonBoard 410c which is often already used for automated CI testing. Changes in v2: - Add missing word in a comment in PATCH 1/15 - Clarify ARM32 situation in dt-bindings patches v1: https://lore.kernel.org/phone-devel/20210928171231.12766-1-stephan@xxxxxxxxxxx/ Lina Iyer (1): soc: qcom: spm: Add 8916 SPM register data Stephan Gerhold (14): arm64: dts: qcom: Add device tree for Samsung Galaxy S4 Mini Value Edition arm64: dts: qcom: msm8916-samsung-serranove: Add touch screen arm64: dts: qcom: msm8916-samsung-serranove: Add touch key arm64: dts: qcom: msm8916-samsung-serranove: Add IMU arm64: dts: qcom: msm8916-samsung-serranove: Add rt5033 battery arm64: dts: qcom: msm8916-samsung-serranove: Add NFC ARM: qcom: Add ARCH_MSM8916 for MSM8916 on ARM32 dt-bindings: arm: cpus: Document qcom,msm8916-smp enable-method ARM: qcom: Add qcom,msm8916-smp enable-method identical to MSM8226 dt-bindings: soc: qcom: spm: Document qcom,msm8916-saw2-v3.0-cpu firmware: qcom: scm: Add support for MC boot address API arm64: dts: qcom: msm8916: Add CPU ACC and SAW/SPM ARM: dts: qcom: msm8916: Add include for SMP without PSCI on ARM32 ARM: dts: qcom: msm8916-samsung-serranove: Include dts from arm64 .../devicetree/bindings/arm/cpus.yaml | 5 +- .../bindings/soc/qcom/qcom,spm.yaml | 1 + arch/arm/boot/dts/Makefile | 1 + .../dts/qcom-msm8916-samsung-serranove.dts | 3 + arch/arm/boot/dts/qcom-msm8916-smp.dtsi | 62 ++ arch/arm/mach-qcom/Kconfig | 10 + arch/arm/mach-qcom/platsmp.c | 1 + arch/arm64/boot/dts/qcom/Makefile | 1 + .../dts/qcom/msm8916-samsung-serranove.dts | 534 ++++++++++++++++++ arch/arm64/boot/dts/qcom/msm8916.dtsi | 56 ++ drivers/firmware/qcom_scm.c | 84 ++- drivers/firmware/qcom_scm.h | 4 + drivers/soc/qcom/spm.c | 21 + 13 files changed, 765 insertions(+), 18 deletions(-) create mode 100644 arch/arm/boot/dts/qcom-msm8916-samsung-serranove.dts create mode 100644 arch/arm/boot/dts/qcom-msm8916-smp.dtsi create mode 100644 arch/arm64/boot/dts/qcom/msm8916-samsung-serranove.dts -- 2.33.0
