[PATCH] ARM: dts: imx6ull: add UART5 input select register definition

Stefan Wahren stefan.wahren at i2se.com
Thu Mar 29 08:35:02 PDT 2018


Am 28.03.2018 um 00:45 schrieb Fabio Estevam:
> On Tue, Mar 27, 2018 at 7:24 PM, Greg Ungerer <gerg at linux-m68k.org> wrote:
>> The iMX6ULL UART5_RX_DATA_SELECT_INPUT DAISY Register has some different
>> bit definitions to that same register in the iMX6UL.
>>
>> The bits for the iMX6UL:
>>
>> 000 CSI_DATA00_ALT8 — Selecting Pad: CSI_DATA00 for Mode: ALT8
>> 001 CSI_DATA01_ALT8 — Selecting Pad: CSI_DATA01 for Mode: ALT8
>> 010 GPIO1_IO04_ALT8 — Selecting Pad: GPIO1_IO04 for Mode: ALT8
>> 011 GPIO1_IO05_ALT8 — Selecting Pad: GPIO1_IO05 for Mode: ALT
>> 100 UART5_TX_DATA_ALT0 — Selecting Pad: UART5_TX_DATA for Mode: ALT
>> 101 UART5_RX_DATA_ALT0 — Selecting Pad: UART5_RX_DATA for Mode: ALT
>>
>> But for the iMX6ULL:
>>
>> 000 CSI_DATA00_ALT8 — Selecting Pad: CSI_DATA00 for Mode: ALT8
>> 001 CSI_DATA01_ALT8 — Selecting Pad: CSI_DATA01 for Mode: ALT8
>> 010 GPIO1_IO04_ALT8 — Selecting Pad: GPIO1_IO04 for Mode: ALT8
>> 011 GPIO1_IO05_ALT8 — Selecting Pad: GPIO1_IO05 for Mode: ALT
>> 100 UART1_TX_DATA_ALT9 — Selecting Pad: UART1_TX_DATA for Mode: ALT9
>> 101 UART1_RX_DATA_ALT9 — Selecting Pad: UART1_RX_DATA for Mode: ALT9
>> 110 UART5_TX_DATA_ALT0 — Selecting Pad: UART5_TX_DATA for Mode: ALT0
>> 111 UART5_RX_DATA_ALT0 — Selecting Pad: UART5_RX_DATA for Mode: ALT0
>>
>> Specifically for a board I am working on with the serial console on UART5
>> I need to be able to enable UART5_RX_DATA_ALT0 mode. There is no definition
>> for the iMX6ULL version of that in imx6ul-pinfunc.h or imx6ull-pinfunc.h.
>>
>> Create a new definition specific to the iMX6ULL so that is settable.
>>
>> Signed-off-by: Greg Ungerer <gerg at linux-m68k.org>
> Reviewed-by: Fabio Estevam <fabio.estevam at nxp.com>

I'm okay with the second version of the patch, but i noticed that at 
least UART5_RTS_B_SELECT_INPUT is also affected.

The bits for the iMX6UL:

000 CSI_DATA03_ALT8 — Selecting Pad: CSI_DATA03 for Mode: ALT8
001 GPIO1_IO08_ALT8 — Selecting Pad: GPIO1_IO08 for Mode: ALT8
010 GPIO1_IO09_ALT8 — Selecting Pad: GPIO1_IO09 for Mode: ALT8
011 ENET1_RX_EN_ALT1 — Selecting Pad: ENET1_RX_EN for Mode: ALT1
100 ENET1_TX_DATA0_ALT1 — Selecting Pad: ENET1_TX_DATA0 for Mode: ALT1
101 CSI_DATA02_ALT8 — Selecting Pad: CSI_DATA02 for Mode: ALT8

But for the iMX6ULL:

000 CSI_DATA03_ALT8 — Selecting Pad: CSI_DATA03 for Mode: ALT8
001 GPIO1_IO08_ALT8 — Selecting Pad: GPIO1_IO08 for Mode: ALT8
010 GPIO1_IO09_ALT8 — Selecting Pad: GPIO1_IO09 for Mode: ALT8
011 UART1_CTS_B_ALT9 — Selecting Pad: UART1_CTS_B for Mode: ALT9
100 UART1_RTS_B_ALT9 — Selecting Pad: UART1_RTS_B for Mode: ALT9
101 ENET1_RX_EN_ALT1 — Selecting Pad: ENET1_RX_EN for Mode: ALT1
110 ENET1_TX_DATA0_ALT1 — Selecting Pad: ENET1_TX_DATA0 for Mode: ALT1
111 CSI_DATA02_ALT8 — Selecting Pad: CSI_DATA02 for Mode: ALT8

Comparing the datasheets isn't fun ...

Should i provide a patch for this or is there a easier way to figure out 
all the differences?

Best regards
Stefan




More information about the linux-arm-kernel mailing list