imx283 pwm support in uboot

[lukeli]

hi.

i can configure pwm in kernel, but fail to configure it in imx283. i saw imx6 have supported pwm setting in uboot.

how can i set it in imx283? thx in advance.

list my source in uboot:

1. writel(BF_PWM_ACTIVEn_INACTIVE(75) |
2.                       BF_PWM_ACTIVEn_ACTIVE(0),
3.                PWM_BASE + HW_PWM_ACTIVEn(pwm_led->pwm));
4.        //设置周期
5. writel(BF_PWM_PERIODn_CDIV(5) | /* divide by 64 */     \
6.         BF_PWM_PERIODn_INACTIVE_STATE(3) | /* low */
7.         BF_PWM_PERIODn_ACTIVE_STATE(2) | /* high */     \
8.         BF_PWM_PERIODn_PERIOD(99)),
9.         PWM_BASE + HW_PWM_PERIODn(pwm_led->pwm));
10.       //打开PWM
11. writel(BF_PWM_CTRL_PWM_ENABLE(pwm_led->pwm),
12.              PWM_BASE + HW_PWM_CTRL_SET);

[igorpadykov · Accepted solution]

Hi luke

please find attached i.MX28 pwm baremetal example, hope this helps.

Best regards

igor

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[lukeli]

thx for the demo source, it works!!

i did not config CLK_CTRL_XTAL_ADDR in my source.