Re: [U-Boot] [PATCH v3 09/14] doc: Document how to apply fdt overlays

2017-09-15 Thread sjg 
On 4 September 2017 at 14:12, Pantelis Antoniou
 wrote:
> We have the capability to apply overlays on the command line but
> we didn't have a document explaining how.
>
> Signed-off-by: Pantelis Antoniou 
> ---
>  doc/README.fdt-overlays | 37 +
>  1 file changed, 37 insertions(+)
>  create mode 100644 doc/README.fdt-overlays
>

Acked-by: Simon Glass 

Applied to u-boot-fdt thanks!
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Re: [U-Boot] [PATCH v3 09/14] doc: Document how to apply fdt overlays

2017-09-08 Thread Simon Glass 
On 4 September 2017 at 14:12, Pantelis Antoniou
 wrote:
> We have the capability to apply overlays on the command line but
> we didn't have a document explaining how.
>
> Signed-off-by: Pantelis Antoniou 
> ---
>  doc/README.fdt-overlays | 37 +
>  1 file changed, 37 insertions(+)
>  create mode 100644 doc/README.fdt-overlays
>

Acked-by: Simon Glass 
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Re: [U-Boot] [PATCH v3 09/14] doc: Document how to apply fdt overlays

2017-09-06 Thread Łukasz Majewski 

On 09/04/2017 10:12 PM, Pantelis Antoniou wrote:

We have the capability to apply overlays on the command line but
we didn't have a document explaining how.

Signed-off-by: Pantelis Antoniou 
---
  doc/README.fdt-overlays | 37 +
  1 file changed, 37 insertions(+)
  create mode 100644 doc/README.fdt-overlays

diff --git a/doc/README.fdt-overlays b/doc/README.fdt-overlays
new file mode 100644
index 000..ee868ec
--- /dev/null
+++ b/doc/README.fdt-overlays
@@ -0,0 +1,37 @@
+U-Boot FDT Overlay usage (without FIT images)
+=
+
+FDT overlays are now available for use even without FIT images.
+It is not as automagic as with FIT images though and require a few
+manual steps.
+
+1. Figure out where to place both the base device tree blob and the
+overlay. Make sure you have enough space to grow the base tree without
+overlapping anything.
+
+=> setenv fdtaddr 0x87f0
+=> setenv fdtovaddr 0x87fc
+
+2. Load the base blob and overlay blobs
+
+=> load ${devtype} ${bootpart} ${fdtaddr} ${bootdir}/base.dtb
+=> load ${devtype} ${bootpart} ${fdtovaddr} ${bootdir}/overlay.dtb
+
+3. Set it as the working fdt tree.
+
+=> fdtaddr $fdtaddr
+
+4. Grow it enough so it can 'fit' all the applied overlays
+
+=> fdt resize 8192
+
+5. You are now ready to apply the overlay.
+
+=> fdt apply $fdtovaddr
+
+Please note that in case of an error, both the base and overlays are going
+to be invalidated, so keep copies to avoid reloading.
+
+Pantelis Antoniou
+pantelis.anton...@konsulko.com
+11/7/2017



Reviewed-by: Łukasz Majewski

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Best regards,

Lukasz Majewski

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Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de
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[U-Boot] [PATCH v3 09/14] doc: Document how to apply fdt overlays

2017-09-04 Thread Pantelis Antoniou 
We have the capability to apply overlays on the command line but
we didn't have a document explaining how.

Signed-off-by: Pantelis Antoniou 
---
 doc/README.fdt-overlays | 37 +
 1 file changed, 37 insertions(+)
 create mode 100644 doc/README.fdt-overlays

diff --git a/doc/README.fdt-overlays b/doc/README.fdt-overlays
new file mode 100644
index 000..ee868ec
--- /dev/null
+++ b/doc/README.fdt-overlays
@@ -0,0 +1,37 @@
+U-Boot FDT Overlay usage (without FIT images)
+=
+
+FDT overlays are now available for use even without FIT images.
+It is not as automagic as with FIT images though and require a few
+manual steps.
+
+1. Figure out where to place both the base device tree blob and the
+overlay. Make sure you have enough space to grow the base tree without
+overlapping anything.
+
+=> setenv fdtaddr 0x87f0
+=> setenv fdtovaddr 0x87fc
+
+2. Load the base blob and overlay blobs
+
+=> load ${devtype} ${bootpart} ${fdtaddr} ${bootdir}/base.dtb
+=> load ${devtype} ${bootpart} ${fdtovaddr} ${bootdir}/overlay.dtb
+
+3. Set it as the working fdt tree.
+
+=> fdtaddr $fdtaddr
+
+4. Grow it enough so it can 'fit' all the applied overlays
+
+=> fdt resize 8192
+
+5. You are now ready to apply the overlay.
+
+=> fdt apply $fdtovaddr
+
+Please note that in case of an error, both the base and overlays are going
+to be invalidated, so keep copies to avoid reloading.
+
+Pantelis Antoniou
+pantelis.anton...@konsulko.com
+11/7/2017
-- 
2.1.4

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