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<anarsoul>
icenowy[m]: hey, I'm trying to get left port on pinebook switched to ehci, but sun4i_usb_phy0_id_vbus_det_scan() never gets called and thus port is never switched to ehci
<anarsoul>
icenowy[m]: any hint on how to get it working?
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<anarsoul>
well, I'm not sure how it's supposed to work - a64 doesn't have neither usb0_vbus_power-supply nor usb0_id_det nor usb0_vbus_det
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<Pe3ucTop>
wens: Thanks, you make my day. I put AXP228 in design, but found it is not I2C after. AXP221 is same pinout with AXP228.
<Pe3ucTop>
anarsoul: is that port mini/micro-usb with ID pin connected to any GPIO of A64 ?
<anarsoul>
nope
<anarsoul>
not on this board
<anarsoul>
it's not micro-usb, it's just a regular usb port
<Pe3ucTop>
probably it must work in host mode by itself if usb0_id_det-gpios / vbus not defined in DT..
<anarsoul>
It didn't. I had to set dr_mode to "host" in usb_otg node even though it's not enabled and add usbphy to ehci0 and ohci0
<sensille>
Pe3ucTop: the other day we talked about uart speed and dma. you said you were using uart at 12.5MHz. what did you have to do to make it possible?
<sensille>
out of the box mine ends at about 1MHz
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<Pe3ucTop>
sensille: out of box UART work at speeds 24Mhz/16/N .. where N=integer(1,2,3,...etc) ; so UART baud rates 1.5M , 750k , 500k , etc..
<sensille>
so by 12MHz you meant 12M/16 baud?
<Pe3ucTop>
to get higher speed you need to change source clock (frequency) for UART .. I was setting 200Mhz ..
<sensille>
is it configurable, or do i have to recompile for that?
<Pe3ucTop>
sensille: no, 24 Mhz it's default clock source to UART controller inside CPU , then controller itself use 16 steps for syncronization and get 1.5Mhz base rate , which could be devided to get needed baudrate.
<Pe3ucTop>
such changes is configurable in devicetree.
<sensille>
i've looked through the data sheet and have seen that the clock source is configurable via registers, but haven't found the tunable
<Pe3ucTop>
sensille: you do not neet to change registers, you need to apply parameters for uart "assigned-clocks", "assigned-clock-parents" and "assigned-clock-rates" . Clock driver will configure needed registers.
<sensille>
Pe3ucTop: great, thanks
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<Pe3ucTop>
for assigned-clock-rates - I used 200000000 (hz) , other parameters depend on chip you using.
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<Net147>
mirko: did you have any chance to write up anything about Mali on the wiki yet?
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<anarsoul>
mripard: I tested pwm backlight with exponential values (power of two) and it's not very good (1-16 are almost the same) I prefer 0-100 with step 10.
<anarsoul>
also change between 32 and 64 is quite noticeable, not like between 16 and 32
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<paulk-gagarine>
anarsoul, note that I posted some values from an exp curve on my ainol aw1 series
<anarsoul|3>
paulk-gagarine: could you share a link?