At Mon, 10 Jun 2019 16:34:53 -0400 Daniel Kulp <[email protected]> wrote:

> 
> 
> 
> 
> > On Jun 10, 2019, at 4:26 PM, Robert Heller <[email protected]> wrote:
> > 
> > At Mon, 10 Jun 2019 12:48:56 -0700 (PDT) [email protected] wrote:
> >> It's not enabled in the bone kernels:
> >> 
> >> 
> >> # CONFIG_PINCTRL_MCP23S08 is not set
> > 
> > In the updated kernel is is enabled.
> 
> I don't see a bone kernel with it enabled, either 4.14 or 4.19:
> 
> config-4.14.108-ti-r104:CONFIG_PINCTRL_MCP23S08=m
                          ^^^^^^^^^^^^^^^^^^^^^^^^^  
                          It is in the 4.14.108 kernel.
> config-4.14.109-bone21:# CONFIG_PINCTRL_MCP23S08 is not set
> config-4.14.115-bone22:# CONFIG_PINCTRL_MCP23S08 is not set
> config-4.19.31-bone31:# CONFIG_PINCTRL_MCP23S08 is not set
> config-4.19.37-bone33:# CONFIG_PINCTRL_MCP23S08 is not set
                          
I just did:

sudo /opt/scripts/tools/update_kernel.sh

and it updated to 4.14.108-ti-r106 by default:

snoopy% grep MCP23 /boot/config-4.14.*
/boot/config-4.14.108-ti-r106:CONFIG_PINCTRL_MCP23S08=m
/boot/config-4.14.71-ti-r80:# CONFIG_PINCTRL_MCP23S08 is not set
snoopy% uname -a
Linux snoopy 4.14.108-ti-r106 #1 SMP PREEMPT Fri May 24 22:12:34 UTC 2019 
armv7l GNU/Linux
snoopy% dir 
/lib/modules/4.14.108-ti-r106/kernel/drivers/pinctrl/pinctrl-mcp23s08.ko.xz 
/lib/modules/4.14.108-ti-r106/kernel/drivers/pinctrl/pinctrl-mcp23s08.ko.xz


> 
> I believe the 115-bone22 and 37-bone33 are the latest on the two branches.

Then someone needs to rebuild them...  Maybe you can file a bug report or 
feature request?

Just because the BBB has 128 on-board GPIO lines (obviously not all of them
are on the headers), does not mean one could not build a Cape with a MCP23017
for 16 more GPIO lines. To quote Billy Idle: "Too much is never enough." (from
an old MTV promo).

> 
> 

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