From d26e1eb0a7c538c457138245f5c5ad0c8312dc9f Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Sat, 9 Jan 2021 17:03:32 +0100 Subject: [PATCH] overlays: seeed-can-fd-hat: clarify how to identify HAT version It turns out the used CAN SPI chip is not a good way to identify the version of the CAN HAT. There are two different board layouts of the Seeed Studio CAN BUS FD HAT. The v1 board doesn't have a battery holder, while the v2 board has. Update the overlay README accordinly. Link: https://github.com/Seeed-Studio/seeed-linux-dtoverlays/issues/13 Cc: Patrick Menschel Signed-off-by: Marc Kleine-Budde --- arch/arm/boot/dts/overlays/README | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) --- a/arch/arm/boot/dts/overlays/README +++ b/arch/arm/boot/dts/overlays/README @@ -2505,16 +2505,18 @@ Load: Name: seeed-can-fd-hat-v1 -Info: Overlay for Seeed Studio CAN BUS FD HAT with two CAN FD channels - (based on the mcp2517fd). +Info: Overlay for Seeed Studio CAN BUS FD HAT with two CAN FD + channels without RTC. Use this overlay if your HAT has no + battery holder. https://www.seeedstudio.com/2-Channel-CAN-BUS-FD-Shield-for-Raspberry-Pi-p-4072.html Load: dtoverlay=seeed-can-fd-hat-v1 Params: Name: seeed-can-fd-hat-v2 -Info: Overlay for Seeed Studio CAN BUS FD HAT with two CAN FD channels - (based on the mcp2518fd) and an RTC. +Info: Overlay for Seeed Studio CAN BUS FD HAT with two CAN FD + channels and an RTC. Use this overlay if your HAT has a + battery holder. https://www.seeedstudio.com/CAN-BUS-FD-HAT-for-Raspberry-Pi-p-4742.html Load: dtoverlay=seeed-can-fd-hat-v2 Params: