# panfrost **Repository Path**: yuhang2__2/panfrost ## Basic Information - **Project Name**: panfrost - **Description**: No description available - **Primary Language**: Unknown - **License**: Not specified - **Default Branch**: main - **Homepage**: None - **GVP Project**: No ## Statistics - **Stars**: 0 - **Forks**: 0 - **Created**: 2026-02-12 - **Last Updated**: 2026-02-12 ## Categories & Tags **Categories**: Uncategorized **Tags**: None ## README # panfrost panfrost integration for rockchip platform ## rk356x / rk3576 Mali-G52 ### 1. Linux kernel部分修改： #### 1.1 修改gpu dts配置 #### rk356x: ``` kernel 5.10: arch/arm64/boot/dts/rockchip/rk3568.dtsi kernel 6.1: arch/arm64/boot/dts/rockchip/rk356x.dtsi gpu: gpu@fde60000 { compatible = "rockchip,rk3568-mali", "arm,mali-bifrost"; reg = <0x0 0xfde60000 0x0 0x4000>; interrupts = , , ; interrupt-names = "job", "mmu", "gpu"; clocks = <&scmi_clk 1>, <&cru CLK_GPU>; clock-names = "gpu", "bus"; operating-points-v2 = <&gpu_opp_table>; power-domains = <&power RK3568_PD_GPU>; status = "disabled"; }; gpu_opp_table: opp-table2 { compatible = "operating-points-v2"; mbist-vmin = <825000 900000 950000>; nvmem-cells = <&gpu_leakage>, <&core_pvtm>, <&mbist_vmin>; nvmem-cell-names = "leakage", "pvtm", "mbist-vmin"; rockchip,pvtm-voltage-sel = < 0 84000 0 84001 91000 1 91001 100000 2 >; rockchip,pvtm-ch = <0 5>; opp-200000000 { opp-hz = /bits/ 64 <200000000>; opp-microvolt = <850000>; opp-microvolt-L0 = <850000>; opp-microvolt-L1 = <825000>; opp-microvolt-L2 = <825000>; }; opp-300000000 { opp-hz = /bits/ 64 <300000000>; opp-microvolt = <850000>; opp-microvolt-L0 = <850000>; opp-microvolt-L1 = <825000>; opp-microvolt-L2 = <825000>; }; opp-400000000 { opp-hz = /bits/ 64 <400000000>; opp-microvolt = <850000>; opp-microvolt-L0 = <850000>; opp-microvolt-L1 = <825000>; opp-microvolt-L2 = <825000>; }; opp-600000000 { opp-supported-hw = <0xfb 0xffff>; opp-hz = /bits/ 64 <600000000>; opp-microvolt = <875000>; opp-microvolt-L0 = <875000>; opp-microvolt-L1 = <825000>; opp-microvolt-L2 = <825000>; }; opp-700000000 { opp-hz = /bits/ 64 <700000000>; opp-microvolt = <950000>; opp-microvolt-L0 = <950000>; opp-microvolt-L1 = <900000>; opp-microvolt-L2 = <850000>; }; opp-800000000 { opp-hz = /bits/ 64 <800000000>; opp-microvolt = <1000000>; opp-microvolt-L0 = <1000000>; opp-microvolt-L1 = <950000>; opp-microvolt-L2 = <900000>; }; }; ``` #### rk3576: ``` kernel 6.1: arch/arm64/boot/dts/rockchip/rk3576.dtsi gpu: gpu@27800000 { compatible = "arm,mali-bifrost"; reg = <0x0 0x27800000 0x0 0x20000>; interrupts = , , ; interrupt-names = "job", "mmu", "gpu"; clocks = <&cru CLK_GPU>, <&cru PCLK_GPU_ROOT>; clock-names = "gpu", "bus"; assigned-clocks = <&cru CLK_GPU>; assigned-clock-rates = <800000000>; power-domains = <&power RK3576_PD_GPU>; operating-points-v2 = <&gpu_opp_table>; dynamic-power-coefficient = <1625>; status = "disabled"; }; gpu_opp_table: gpu-opp-table { compatible = "operating-points-v2"; opp-300000000 { opp-hz = /bits/ 64 <300000000>; opp-microvolt = <712500 712500 875000>; }; opp-400000000 { opp-hz = /bits/ 64 <400000000>; opp-microvolt = <712500 712500 875000>; }; opp-500000000 { opp-hz = /bits/ 64 <500000000>; opp-microvolt = <712500 712500 875000>; }; opp-600000000 { opp-hz = /bits/ 64 <600000000>; opp-microvolt = <712500 712500 875000>; }; opp-700000000 { opp-hz = /bits/ 64 <700000000>; opp-microvolt = <712500 712500 875000>; }; opp-800000000 { opp-hz = /bits/ 64 <800000000>; opp-microvolt = <812500 812500 875000>; }; opp-900000000 { opp-hz = /bits/ 64 <900000000>; opp-microvolt = <875000 875000 875000>; }; }; ``` #### 1.2 修改arch/arm64/configs/rockchip_linux_defconfig，启用panfrost驱动 ``` CONFIG_DRM_PANFROST=y ``` #### 1.3 (可选) 一些版本Mesa获取drm busid时调用 DRM_IOCTL_GET_UNIQUE 可能出现错误，可以对内核 drm 驱动做如下修改： ``` diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c index 6172f786012b..dbdfaa755bea 100644 --- a/drivers/gpu/drm/drm_ioctl.c +++ b/drivers/gpu/drm/drm_ioctl.c @@ -121,6 +121,13 @@ int drm_getunique(struct drm_device *dev, void *data, mutex_lock(&dev->master_mutex); master = file_priv->master; + + if (master == NULL) { + u->unique_len = 0; + mutex_unlock(&dev->master_mutex); + return 0; + } + if (u->unique_len >= master->unique_len) { if (copy_to_user(u->unique, master->unique, master->unique_len)) { mutex_unlock(&dev->master_mutex); ``` #### 1.4 重新编译linux kernel，烧写boot.img，从启动信息中确认panfrost驱动加载情况： ``` [ 3.267980] panfrost fde60000.gpu: clock rate = 594000000 [ 3.268023] panfrost fde60000.gpu: bus_clock rate = 200000000 [ 3.269270] panfrost fde60000.gpu: mali-g52 id 0x7402 major 0x1 minor 0x0 status 0x0 [ 3.269299] panfrost fde60000.gpu: features: 00000000,13de77ff, issues: 00000000,00000400 [ 3.269322] panfrost fde60000.gpu: Features: L2:0x07110206 Shader:0x00000002 Tiler:0x00000209 Mem:0x1 MMU:0x00002823 AS:0xff JS:0x7 [ 3.269341] panfrost fde60000.gpu: shader_present=0x1 l2_present=0x1 [ 3.271985] [drm] Initialized panfrost 1.1.0 20180908 for fde60000.gpu on minor 0 ```   ### 2. 安装mesa 安装必要的软件包： sudo apt install -y x11proto-core-dev xtrans-dev libpixman-1-dev libx11-dev libxkbfile-dev libxfont-dev nettle-dev systemd libudev-dev libdrm-dev libepoxy-dev mesa-common-dev nettle-dev libudev-dev libgbm-dev libepoxy-dev libxshmfence-dev libxcb-xinput-dev #### 2.1 编译 libdrm: ``` git clone https://gitlab.freedesktop.org/mesa/drm.git cd drm meson build --prefix=/usr/local sudo ninja -C build install ``` #### 2.2 编译 mesa: ``` git clone https://gitlab.freedesktop.org/mesa/mesa.git cd mesa git checkout -f mesa-24.3.2 -b 24.3.2 # 如需wayland后端支持，设置-Dplatforms=x11,wayland meson build -Dvulkan-drivers=panfrost -Dgallium-drivers=panfrost -Dplatforms=x11 -Dglx=auto -Dprefix=/usr/local sudo ninja -C build install ``` #### 2.3 编译 xserver: ``` git clone https://gitlab.freedesktop.org/xorg/xserver.git cd xserver git checkout -f xorg-server-21.1.14 -b xserver-21.1.14 meson build -D prefix=/usr/local -D glamor=true sudo ninja -C build install sudo mkdir -p /var/local/log ``` #### 2.4 编译 libinput: ``` git clone https://gitlab.freedesktop.org/xorg/driver/xf86-input-libinput.git cd xf86-input-libinput meson build sudo ninja -C build install ``` ### 3. 系统配置信息修改 #### 3.1 修改/usr/bin/X, 禁用libdrm-cursor。并修改Xorg启动路径 ``` #export LD_PRELOAD=/usr/lib/aarch64-linux-gnu/libdrm-cursor.so.1 basedir=/usr/local/bin ``` #### 3.2 修改/etc/ld.so.conf.d/00-aarch64-mali.conf文件，更新系统链接路径，优先加载mesa驱动 ``` /usr/local/lib ``` 修改完成后，执行以下命令更新共享库缓存，并重启机器： ``` ldconfig ```   ### 4. 安装相关工具，查看图形系统信息 #### 4.1.查看glx支持情况 ``` apt install -y mesa-utils glxinfo -B display: :0 screen: 0 direct rendering: Yes Extended renderer info (GLX_MESA_query_renderer): Vendor: Mesa (0xffffffff) Device: Mali-G52 r1 (Panfrost) (0xffffffff) Version: 23.0.0 Accelerated: yes Video memory: 1960MB Unified memory: yes Preferred profile: core (0x1) Max core profile version: 3.1 Max compat profile version: 3.1 Max GLES1 profile version: 1.1 Max GLES[23] profile version: 3.1 OpenGL vendor string: Mesa OpenGL renderer string: Mali-G52 r1 (Panfrost) OpenGL core profile version string: 3.1 Mesa 23.0.0 (git-bbf142b8de) OpenGL core profile shading language version string: 1.40 OpenGL core profile context flags: (none) OpenGL version string: 3.1 Mesa 23.0.0 (git-bbf142b8de) OpenGL shading language version string: 1.40 OpenGL context flags: (none) OpenGL ES profile version string: OpenGL ES 3.1 Mesa 23.0.0 (git-bbf142b8de) OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.10 ``` #### 4.2.查看egl支持情况 ``` apt install -y mesa-utils-extra eglinfo EGL client extensions string: EGL_EXT_client_extensions EGL_EXT_device_base EGL_EXT_device_enumeration EGL_EXT_device_query EGL_EXT_platform_base EGL_KHR_client_get_all_proc_addresses EGL_KHR_debug EGL_EXT_platform_device EGL_EXT_platform_x11 EGL_KHR_platform_x11 EGL_EXT_platform_xcb EGL_MESA_platform_gbm EGL_KHR_platform_gbm EGL_MESA_platform_surfaceless EGL API version: 1.4 EGL vendor string: Mesa Project EGL version string: 1.4 EGL client APIs: OpenGL OpenGL_ES EGL extensions string: EGL_ANDROID_blob_cache EGL_ANDROID_native_fence_sync EGL_EXT_buffer_age EGL_EXT_image_dma_buf_import EGL_EXT_image_dma_buf_import_modifiers EGL_KHR_cl_event2 EGL_KHR_config_attribs EGL_KHR_context_flush_control EGL_KHR_create_context EGL_KHR_create_context_no_error EGL_KHR_fence_sync EGL_KHR_get_all_proc_addresses EGL_KHR_gl_colorspace EGL_KHR_gl_renderbuffer_image EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_3D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_image EGL_KHR_image_base EGL_KHR_image_pixmap EGL_KHR_no_config_context EGL_KHR_partial_update EGL_KHR_reusable_sync EGL_KHR_surfaceless_context EGL_EXT_pixel_format_float EGL_KHR_wait_sync EGL_MESA_configless_context EGL_MESA_drm_image EGL_MESA_image_dma_buf_export EGL_MESA_query_driver ```