TDA4VM: TDA4VM ECAP APWM mode setting in linux

sun ruijie

Intellectual 603 points

Part Number: TDA4VM

Hellow，

trying to use eCAP0 driver as APWM，so, how to configure it in APWM mode in linux （SDK 0801)?

Thanks，

Ruijie

over 2 years ago

0 Karthik Ramanan over 2 years ago

TI__Guru** 113810 points

Hi Ruijie,

Here is a link to the FAQ that can help you to make further progress.

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/982074/faq-tda4vm-dra829v-j721e-how-to-enable-ehrpwm-on-j7-evm-using-linux

Regards
Karthik

0 sun ruijie over 2 years ago in reply to Karthik Ramanan

Intellectual 603 points

Hi Karthik，

I see that the above link is about the modification of dts of ehrpwm, but I want to set ecap to be pwm mode，

I greped the ecap in ti linux dts，can found the ecap setting in k3-am64-main.dtsi，but can’t found this in j721e，

How can I set ecap,thanks.

k3-am64-main.dtsi:1355: ecap0: pwm@23100000 {
k3-am64-main.dtsi:1356: compatible = "ti,am64-ecap", "ti,am3352-ecap";
k3-am64-main.dtsi:1364: ecap1: pwm@23110000 {
k3-am64-main.dtsi:1365: compatible = "ti,am64-ecap", "ti,am3352-ecap";
k3-am64-main.dtsi:1373: ecap2: pwm@23120000 {
k3-am64-main.dtsi:1374: compatible = "ti,am64-ecap", "ti,am3352-ecap";

Thanks，

Ruijie Sun

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TDA4VM: TDA4VM ECAP APWM mode setting in linux