Thread (19 messages) 19 messages, 4 authors, 2019-10-26

Re: [PATCH v3 2/3] ARM: dts: add Netronix E60K02 board common file

From: Andreas Kemnade <andreas@kemnade.info>
Date: 2019-10-25 10:09:43
Also in: linux-devicetree, lkml

Hi Shawn,

On Fri, 25 Oct 2019 17:14:04 +0800
Shawn Guo [off-list ref] wrote:
On Sun, Oct 13, 2019 at 05:56:44PM +0200, Andreas Kemnade wrote:
quoted
On Fri, 11 Oct 2019 18:56:33 +0200
Marco Felsch [off-list ref] wrote:
  
quoted
On 19-10-11 18:19, Andreas Kemnade wrote:  
quoted
On Fri, 11 Oct 2019 17:22:14 +0200
Marco Felsch [off-list ref] wrote:
    
quoted
On 19-10-11 17:05, Andreas Kemnade wrote:    
quoted
On Fri, 11 Oct 2019 09:29:27 -0500
Rob Herring [off-list ref] wrote:
      
quoted
On Fri, Oct 11, 2019 at 09:41:48AM +0200, Andreas Kemnade wrote:      
quoted
On Fri, 11 Oct 2019 08:56:09 +0200
Marco Felsch [off-list ref] wrote:
        
quoted
Hi Andreas,

On 19-10-10 21:23, Andreas Kemnade wrote:        
quoted
The Netronix board E60K02 can be found some several Ebook-Readers,
at least the Kobo Clara HD and the Tolino Shine 3. The board
is equipped with different SoCs requiring different pinmuxes.

For now the following peripherals are included:
- LED
- Power Key
- Cover (gpio via hall sensor)
- RC5T619 PMIC (the kernel misses support for rtc and charger
  subdevices).
- Backlight via lm3630a
- Wifi sdio chip detection (mmc-powerseq and stuff)

It is based on vendor kernel but heavily reworked due to many
changed bindings.

Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
---
Changes in v3:
- better led name
- correct memory size
- comments about missing devices

Changes in v2:
- reordered, was 1/3
- moved pinmuxes to their actual users, not the parents
  of them
- removed some already-disabled stuff
- minor cleanups          
You won't change the muxing, so a this dtsi can be self contained?
        
So you want me to put a big 
#if defined(MX6SLL)         
Not sure what the comment meant, but no, don't do this. C defines in dts 
files are for symbolic names for numbers and assembling bitfields and 
that's it.      
yes, that is also my opinion. For now, there is only one user
of this .dtsi, but I have another one in preparation. That is the
reason for splitting things between .dts and .dtsi to avoid such ugly
ifdefs      
Then IMHO the pnictrl-* entries shouldn't appear in the dsti.
    
hmm, maybe now I understand your idea:
You do not want only to have

  pinctrl_lm3630a_bl_gpio: lm3630a_bl_gpio_grp {
                        fsl,pins = <
                                MX6SLL_PAD_EPDC_PWR_CTRL3__GPIO2_IO10   0x10059 /* HWEN */    
                        >;    
                };
in dts, but also  do not have these in .dtsi:

                pinctrl-names = "default";
                pinctrl-0 = <&pinctrl_lm3630a_bl_gpio>;

and instead have in dts:
&lm3630a {
 	pinctrl-names = "default";
        pinctrl-0 = <&pinctrl_lm3630a_bl_gpio>;
	
};


just to make sure I get it right before doing the restructuring work. That way of structuring things did not come to my mind, but then the .dtsi is self-contained.    
That is what I mean but wait for Shawn's comments. It's just my opinion
that .dtsi and .dts files should be self-contained.  
for files like the imx6sll.dtsi, I would clearly agree, here it might
hide errors like missing pinmuxes in the dts, so it is not so clear.
But if there is is consensus about .dtsi being self-contained I will not
refuse to restructurize my work.  
Yes, I would appreciate the effort of keep .dtsi being self-contained.
ok, then I will restructurize as proposed and create a v4 this weekend.

Regards,
Andreas

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