Hello Lucas,
On Fri, 26 Aug 2022 21:29:32 +0200
Lucas Stach <l.stach@xxxxxxxxxxxxxx> wrote:
> Enable the DT nodes for HDMI TX and PHY and add the pinctrl for the few
> involved pins that are configurable.
>
> Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
I'm joining late to this party... Is this the latest version of this
series? I haven't found any more recent, but if it is not the case
would you point me to the most recent one please?
> + pinctrl_hdmi: hdmigrp {
> + fsl,pins = <
> + MX8MP_IOMUXC_HDMI_DDC_SCL__HDMIMIX_HDMI_SCL 0x1c3
> + MX8MP_IOMUXC_HDMI_DDC_SDA__HDMIMIX_HDMI_SDA 0x1c3
Is the low nibble (0x3) right?BIT(0) is reserved according too the
reference manual.
Also, all the non-reserved bits in that nibble are bits 1 and 2, which
set the drive strength. For an I2C line it seems that the minimum drive
strength (0x0) should be enough for an I2C line: with any drive
strength setting the supported frequency is >= 65 MHz.
> + MX8MP_IOMUXC_HDMI_HPD__HDMIMIX_HDMI_HPD 0x19
> + MX8MP_IOMUXC_HDMI_CEC__HDMIMIX_HDMI_CEC 0x19
Here as well, bits 0 and 3 are reserved.
Best regards,
Luca
--
Luca Ceresoli, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
