Msm8953 For Arm64 Driver

The Ultimate Guide to the MSM8953 for ARM64 Driver: Mainlining and Development

To run a modern Linux kernel (5.x or 6.x) instead of the heavily patched Android 3.18/4.9 kernels these devices shipped with, specialized are required for all these subsystems. 2. The Current State of MSM8953 ARM64 Drivers (Mainline)

Add your device node inside the target board’s .dts file under the appropriate bus (e.g., blsp1_i2c1 ): devicetree msm8953 for arm64 driver

Developing or debugging drivers for the MSM8953 requires interacting with three core proprietary/semi-proprietary subsystems: Clocks, Power Management, and Pin Control. Global Clock Controller (GCC) Driver

The Resource Power Manager (RPM) is an isolated ARM Cortex-M3 co-processor inside the MSM8953 that manages power rails (SMPS and LDOs). The Ultimate Guide to the MSM8953 for ARM64

All the core functionality—from storage, USB, and the GPU to the interconnect and power management—now has dedicated drivers in the mainline kernel. While projects like Camera and Audio are still maturing, the platform is already functional enough to run full Linux distributions like postmarketOS and upstream kernels on devices like the Fairphone 3.

Base your .dts on qcom-msm8953.dtsi from the mainline kernel (it exists but is minimal). You will need to copy bindings from the CAF kernel’s arch/arm64/boot/dts/qcom/ . Global Clock Controller (GCC) Driver The Resource Power

The Linux kernel relies on a Device Tree to discover and configure hardware blocks on non-enumerable buses. For ARM64, the device tree must correctly specify 64-bit address cells and interrupt properties.