u-boot的设备模型,配合pinctrl core,会在设备枚举的时候,将设备中pinctrl-name为“default”或者pinctrl句柄为“pinctrl-0”的pinctrl配置项生效。 另外,我们可以指定多个pinctrl功能,并在driver中随意的使能/禁止相应的功能,这里不再详细介绍,需要使用的同学可自行揣摩。 4)基于该设计思路,
void dev_or_flags(const struct udevice *dev, u32 or); void dev_bic_flags(const struct udevice *dev, u32 bic); #else static inline u32 dev_get_flags(const struct udevice *dev) { return dev->flags_; } static inline void dev_or_flags(struct udevice *dev, u32 or) { dev->flag...
dm_scan_platdata():扫描U_BOOT_DEVICE定义的设备,创建对应的udevice和uclass对象,查找并绑定相应driver,并调用probe流程。 dm_scan_fdt():扫描由FDT设备树文件定义的设备,创建对应的udevice和uclass对象,查找并绑定相应driver,并调用probe流程。 附:核心数据结构 U_BOOT_DRIVER(demo_shape_drv) ={ .name="demo_...
u-boot 是嵌入式开发中经常使用的一种bootloader,兼顾 boot (启动)与 loader(引导)等基础功能,应用于 ARM 等多个平台,通用性比较好,在嵌入式 Linux 开发中,用于引导启动 Linux 内核,也可以用于引导启动其他的操作系统 u-boot 地址https:///u-boot/u-boot.git 当前代码版本:v2024.04-rc5 本篇记录:UCLASS_DR...
DM 是 U-Boot 中的驱动框架，全称 Driver Mode。像 Linux Kernel 中的驱动三要素 device 、bus 、driver ⼀样，DM 也有⾃⼰的三要素：udevice、uclass、driver。udevice 描述具体的某⼀个硬件设备。driver 是与这个设备匹配的驱动。uclass 是同⼀类设备的抽象，提供管理同⼀类设备的抽象接⼝。udevice...
static struct driver_info root_info = { .name = "root_driver", }; 所以对于dm_init的info_name就是root_driver。另外一个特点device_bind_common前先要drv = lists_driver_lookup_name(info->name);这个info->name其实就是通过U_BOOT_DRIVER注册的driver结构体的.name。由于root_driver应该找不到,所以为...
Linux seems to recognize our phy when U-Boot is configured and everything is normal. Micrel KSZ8041 2188000.ethernet-1:01: attached PHY driver (mii_bus:phy_addr=2188000.ethernet-1:01, irq=POLL) fec 2188000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx ...
This patch rewrites MMC SPI driver using U-Boot DM framework and get it's working on SiFive Unleashed board. Signed-off-by: Bhargav Shah <bhargavshah1988@gmail.com> Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng...
* driver binding protocol on it. * * The EFI block driver binds to controllers implementing the block io * protocol. * * When the bind function of the EFI block driver is called it creates a * new U-Boot block device. It installs child handles for all partitions and * installs the ...
Tool/software:Linux Hello, In my board, I use the CAT706 as off chip watchdog, and I use an GPIO to feed it. For this condition, how can I add the driver of this watchdog in the uboot? Is there any examples for it? Hi Longfei Li, ...