[1/8,RFC] dt-bindings: renesas: Document R-Car H3 and M3-W SiP DT bindings

Submitted by Geert Uytterhoeven on April 19, 2017, 9:15 a.m.

Details

Message ID 1492593351-13835-2-git-send-email-geert+renesas@glider.be
State Changes Requested
Headers show

Commit Message

Geert Uytterhoeven April 19, 2017, 9:15 a.m.
Document the SiP ("System-in-Package") versions of the R-Car H3 and M3-W
SoCs, which contain an R-Car H3 or M3-W SoC, RAM, and HyperFlash.

Add their compatible values to all boards equipped with R-Car Gen3 SiPs.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
Questions:
  - Do we need more compatible values, for different configurations?
    At least r8j7796 is available with either 2 GiB or 4 GiB of RAM,
    possibly using RAM parts from different vendors.
---
 Documentation/devicetree/bindings/arm/shmobile.txt | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

Comments

Rob Herring April 28, 2017, 1:39 p.m.
On Wed, Apr 19, 2017 at 11:15:44AM +0200, Geert Uytterhoeven wrote:
> Document the SiP ("System-in-Package") versions of the R-Car H3 and M3-W
> SoCs, which contain an R-Car H3 or M3-W SoC, RAM, and HyperFlash.
> 
> Add their compatible values to all boards equipped with R-Car Gen3 SiPs.
> 
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
> Questions:
>   - Do we need more compatible values, for different configurations?
>     At least r8j7796 is available with either 2 GiB or 4 GiB of RAM,
>     possibly using RAM parts from different vendors.

Same die, just a different package? If so, I don't think you need a 
different compatible. It's going to be a different board from any 
non-SiP which should be enough to distinguish.

Rob
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Geert Uytterhoeven April 28, 2017, 2:23 p.m.
Hi Rob,

On Fri, Apr 28, 2017 at 3:39 PM, Rob Herring <robh@kernel.org> wrote:
> On Wed, Apr 19, 2017 at 11:15:44AM +0200, Geert Uytterhoeven wrote:
>> Document the SiP ("System-in-Package") versions of the R-Car H3 and M3-W
>> SoCs, which contain an R-Car H3 or M3-W SoC, RAM, and HyperFlash.
>>
>> Add their compatible values to all boards equipped with R-Car Gen3 SiPs.
>>
>> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
>> ---
>> Questions:
>>   - Do we need more compatible values, for different configurations?
>>     At least r8j7796 is available with either 2 GiB or 4 GiB of RAM,
>>     possibly using RAM parts from different vendors.
>
> Same die, just a different package? If so, I don't think you need a
> different compatible. It's going to be a different board from any
> non-SiP which should be enough to distinguish.

An SiP is more like a CPU daughterboard.

The different SiP-versions based on r8a7795 contain the same r8a7795 SoC die,
but different amounts of RAM, i.e. different RAM dies.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Patch hide | download patch | download mbox

diff --git a/Documentation/devicetree/bindings/arm/shmobile.txt b/Documentation/devicetree/bindings/arm/shmobile.txt
index 170fe0562c637eab..8ca3f64fec21d8b0 100644
--- a/Documentation/devicetree/bindings/arm/shmobile.txt
+++ b/Documentation/devicetree/bindings/arm/shmobile.txt
@@ -41,6 +41,14 @@  SoCs:
     compatible = "renesas,r8a7796"
 
 
+SiPs:
+
+  - R-Car H3 SiP (R8J77950)
+    compatible = "renesas,r8j7795", "renesas,r8a7795"
+  - R-Car M3-W SiP (R8J77960)
+    compatible = "renesas,r8j7796", "renesas,r8a7796"
+
+
 Boards:
 
   - Alt (RTP0RC7794SEB00010S)
@@ -58,7 +66,7 @@  Boards:
   - Gose (RTP0RC7793SEB00010S)
     compatible = "renesas,gose", "renesas,r8a7793"
   - H3ULCB (R-Car Starter Kit Premier, RTP0RC7795SKB00010S)
-    compatible = "renesas,h3ulcb", "renesas,r8a7795";
+    compatible = "renesas,h3ulcb", "renesas,r8j7795", "renesas,r8a7795";
   - Henninger
     compatible = "renesas,henninger", "renesas,r8a7791"
   - Koelsch (RTP0RC7791SEB00010S)
@@ -70,7 +78,7 @@  Boards:
   - Lager (RTP0RC7790SEB00010S)
     compatible = "renesas,lager", "renesas,r8a7790"
   - M3ULCB (R-Car Starter Kit Pro, RTP0RC7796SKB00010S)
-    compatible = "renesas,m3ulcb", "renesas,r8a7796";
+    compatible = "renesas,m3ulcb", "renesas,r8j7796", "renesas,r8a7796";
   - Marzen (R0P7779A00010S)
     compatible = "renesas,marzen", "renesas,r8a7779"
   - Porter (M2-LCDP)
@@ -78,9 +86,9 @@  Boards:
   - RSKRZA1 (YR0K77210C000BE)
     compatible = "renesas,rskrza1", "renesas,r7s72100"
   - Salvator-X (RTP0RC7795SIPB0010S)
-    compatible = "renesas,salvator-x", "renesas,r8a7795";
+    compatible = "renesas,salvator-x", "renesas,r8j7795", "renesas,r8a7795";
   - Salvator-X (RTP0RC7796SIPB0011S)
-    compatible = "renesas,salvator-x", "renesas,r8a7796";
+    compatible = "renesas,salvator-x", "renesas,r8j7796", "renesas,r8a7796";
   - SILK (RTP0RC7794LCB00011S)
     compatible = "renesas,silk", "renesas,r8a7794"
   - SK-RZG1E (YR8A77450S000BE)