git.openwrt.org Git - openwrt/staging/chunkeey.git/blob

   1 From d26e1eb0a7c538c457138245f5c5ad0c8312dc9f Mon Sep 17 00:00:00 2001
   2 From: Marc Kleine-Budde <mkl@pengutronix.de>
   3 Date: Sat, 9 Jan 2021 17:03:32 +0100
   4 Subject: [PATCH] overlays: seeed-can-fd-hat: clarify how to identify
   5  HAT version
   6
   7 It turns out the used CAN SPI chip is not a good way to identify the version of
   8 the CAN HAT.
   9
  10 There are two different board layouts of the Seeed Studio CAN BUS FD HAT. The
  11 v1 board doesn't have a battery holder, while the v2 board has. Update the
  12 overlay README accordinly.
  13
  14 Link: https://github.com/Seeed-Studio/seeed-linux-dtoverlays/issues/13
  15 Cc: Patrick Menschel <menschel.p@posteo.de>
  16 Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
  17 ---
  18  arch/arm/boot/dts/overlays/README | 10 ++++++----
  19  1 file changed, 6 insertions(+), 4 deletions(-)
  20
  21 --- a/arch/arm/boot/dts/overlays/README
  22 +++ b/arch/arm/boot/dts/overlays/README
  23 @@ -2505,16 +2505,18 @@ Load:   <Deprecated>
  24
  25
  26  Name:   seeed-can-fd-hat-v1
  27 -Info:   Overlay for Seeed Studio CAN BUS FD HAT with two CAN FD channels
  28 -        (based on the mcp2517fd).
  29 +Info:   Overlay for Seeed Studio CAN BUS FD HAT with two CAN FD
  30 +        channels without RTC. Use this overlay if your HAT has no
  31 +        battery holder.
  32          https://www.seeedstudio.com/2-Channel-CAN-BUS-FD-Shield-for-Raspberry-Pi-p-4072.html
  33  Load:   dtoverlay=seeed-can-fd-hat-v1
  34  Params: <None>
  35
  36
  37  Name:   seeed-can-fd-hat-v2
  38 -Info:   Overlay for Seeed Studio CAN BUS FD HAT with two CAN FD channels
  39 -        (based on the mcp2518fd) and an RTC.
  40 +Info:   Overlay for Seeed Studio CAN BUS FD HAT with two CAN FD
  41 +        channels and an RTC. Use this overlay if your HAT has a
  42 +        battery holder.
  43          https://www.seeedstudio.com/CAN-BUS-FD-HAT-for-Raspberry-Pi-p-4742.html
  44  Load:   dtoverlay=seeed-can-fd-hat-v2
  45  Params: <None>