AM335x GP evm 关于PROFILE的疑问

Sean

Other Parts Discussed in Thread: PROFIBUS

请问各位：这里的PROFILE是做什么用的？这些值是根据什么确定的？

/* REVIST : check posibility of PROFILE_(x) syntax usage */
#define PROFILE_NONE   -1   /* Few EVM doesn't have profiles */
#define PROFILE_0       (0x1 << 0)
#define PROFILE_1       (0x1 << 1)
#define PROFILE_2       (0x1 << 2)
#define PROFILE_3       (0x1 << 3)
#define PROFILE_4       (0x1 << 4)
#define PROFILE_5       (0x1 << 5)
#define PROFILE_6       (0x1 << 6)
#define PROFILE_7       (0x1 << 7)
#define PROFILE_ALL       0xFF

比如 {uart1_wl12xx_init, DEV_ON_BASEBOARD, (PROFILE_0 | PROFILE_3 | PROFILE_5)}

uart1是根据什么选的PROFILE_0 | PROFILE_3 | PROFILE_5，还有，uart1明明接在daughterboard，为什么这里是DEV_ON_BASEBOARD？

10 年多前

0 Steven Liu1 10 年多前

TI__Mastermind 25020 points

这个profile的值，决定了一些管脚的pinmux配置，从而使得这个GPEVM板能够进行更多功能的验证。具体的profile值对应的pinmux的配置信息可以参考：

http://processors.wiki.ti.com/index.php/AM335x_General_Purpose_EVM_CPLD

这个是wl12xx模块吧，没仔细看过，但这个wireless的模块是在baseboard上面有插槽接口的。建议你仔细看一下原理图，是不是被复用了。

0 Sean 10 年多前回复 Steven Liu1

Intellectual 680 points

您好，首先感谢您的回复，这个不是uart1吗？它是这么定义的：

static struct pinmux_config uart1_wl12xx_pin_mux[] = {
   {"uart1_ctsn.uart1_ctsn", OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT},
   {"uart1_rtsn.uart1_rtsn", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT},
   {"uart1_rxd.uart1_rxd", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},
   {"uart1_txd.uart1_txd", OMAP_MUX_MODE0 | AM33XX_PULL_ENBL},
   {NULL, 0},
};

跟这个复用，但是profibus_pin_mux不在gen_purp_evm_dev_cfg数组里，应该不会被调用吧

static struct pinmux_config profibus_pin_mux[] = {
   {"uart1_rxd.pr1_uart0_rxd_mux1", OMAP_MUX_MODE5 | AM33XX_PIN_INPUT},
   {"uart1_txd.pr1_uart0_txd_mux1", OMAP_MUX_MODE5 | AM33XX_PIN_OUTPUT},
   {"mcasp0_fsr.pr1_pru0_pru_r30_5", OMAP_MUX_MODE5 | AM33XX_PIN_OUTPUT},
   {NULL, 0},
};

我还有一些问题

1.uart1需要在硬件上做处理吗？还是只要配置正确，不被复用，就能正常使用？

2.uart1的配置过程，步骤能给我讲讲吗？

3.uart0是在哪里初始化的，我在board-am335xevm.c上没有找到

PS：不好意思，问题有点多，但是我实在是不懂，我在别的帖子问，也没人告诉我，烦请您耐心解答，万分感谢！

0 Steven Liu1 10 年多前回复 Sean

TI__Mastermind 25020 points

1. 我刚翻了一下原理图，UART1的硬件设计在BASEBOARD上面。不是，我的意思是说，你注意pin脚的功能复用。被复用的pin脚只要配置正确就能正常使用。

2. 参考TRM的UART章节。

3. 这个初始化，应该在最初的阶段就进行了。

0 Sean 10 年多前回复 Steven Liu1

Intellectual 680 points

您好，感谢您的解答，这是默认的配置，这么配置正确吗？应该怎么确认呢？还有关于profile的值，我看不大明白，您能给我举个例子吗？比如就拿uart1来说

(PROFILE_0 | PROFILE_3 | PROFILE_5) ，设置了哪些pinmux？

board-am335xevm.c:

static void uart1_wl12xx_init(int evm_id, int profile)
{
setup_pin_mux(uart1_wl12xx_pin_mux);
}

{uart1_wl12xx_init, DEV_ON_BASEBOARD, (PROFILE_0 | PROFILE_3 |
PROFILE_5)},

mux33xx.c:

    _AM33XX_MUXENTRY(UART1_CTSN, 0,
       "uart1_ctsn", NULL, NULL, "i2c2_sda",
       "spi1_cs0", NULL, NULL, "gpio0_12"),
   _AM33XX_MUXENTRY(UART1_RTSN, 0,
       "uart1_rtsn", NULL, NULL, "i2c2_scl",
       "spi1_cs1", NULL, NULL, "gpio0_13"),
   _AM33XX_MUXENTRY(UART1_RXD, 0,
       "uart1_rxd", "mmc1_sdwp", NULL, "i2c1_sda",
       NULL, "pr1_uart0_rxd_mux1", NULL, "gpio0_14"),
   _AM33XX_MUXENTRY(UART1_TXD, 0,
       "uart1_txd", "mmc2_sdwp", NULL, "i2c1_scl",
       NULL, "pr1_uart0_txd_mux1", NULL, "gpio0_15"),

omap_hwmod_33xx_data.c:

/* uart1 */
static struct omap_hwmod_dma_info uart1_edma_reqs[] = {
   { .name = "tx",   .dma_req = 26, },
   { .name = "rx",   .dma_req = 27, },
   { .dma_req = -1 }
};

static struct omap_hwmod_addr_space am33xx_uart1_addr_space[] = {
   {
       .pa_start   = 0x44E09000,
       .pa_end       = 0x44E09000 + SZ_8K - 1,
       .flags       = ADDR_TYPE_RT,
   },
   { }
};

static struct omap_hwmod_ocp_if am33xx_l4_wkup__uart1 = {
   .master       = &am33xx_l4wkup_hwmod,
   .slave       = &am33xx_uart1_hwmod,
   .clk       = "uart1_ick",
   .addr       = am33xx_uart1_addr_space,
   .user       = OCP_USER_MPU,
};

static struct omap_hwmod_irq_info am33xx_uart1_irqs[] = {
   { .irq = 72 },
   { .irq = -1 }
};

static struct omap_hwmod_ocp_if *am33xx_uart1_slaves[] = {
   &am33xx_l4_wkup__uart1,
};

static struct omap_hwmod am33xx_uart1_hwmod = {
   .name       = "uart1",
   .class       = &uart_class,
   .clkdm_name   = "l4_wkup_clkdm",
   .mpu_irqs   = am33xx_uart1_irqs,
   .main_clk   = "uart1_fck",
   .sdma_reqs   = uart1_edma_reqs,
   .prcm       = {
       .omap4   = {
           .clkctrl_offs   = AM33XX_CM_WKUP_UART0_CLKCTRL_OFFSET,
           .modulemode   = MODULEMODE_SWCTRL,
       },
   },
   .slaves       = am33xx_uart1_slaves,
   .slaves_cnt   = ARRAY_SIZE(am33xx_uart1_slaves),
};

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AM335x GP evm 关于PROFILE的疑问