FSL U-Boots use /soc8...@e0000000 node to search and fixup serial nodes' clock-frequency properties. Though in upstream kernels we use new naming convention -- for IMMR address space dts files specify /i...@e0000000 nodes.
This makes FSL U-Boots fail to fixup the clock frequencies, and that leads to serial ports misbehaviour. We can workaround the issue by filling the clock frequency values manually. p.s. For the same reason FSL U-Boots fail to fixup MAC addresses for ethernet nodes, so users should either change the .dts file locally or set MAC address via `ifconfig hw ether' command. Signed-off-by: Anton Vorontsov <[email protected]> --- Leon, With this patch 2.6.28 kernel boots and works fine with the U-Boot I took from this image (downloadable from freescale.com): $ md5sum MPC8315ERDB_20080321-ltib.iso 009730826366d593347b88fa4fdb9be0 MPC8315ERDB_20080321-ltib.iso That is, U-Boot 1.3.0-rc2 (Mar 21 2008 - 13:36:09) MPC83XX arch/powerpc/boot/dts/mpc8315erdb.dts | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/boot/dts/mpc8315erdb.dts b/arch/powerpc/boot/dts/mpc8315erdb.dts index 9a4fa2a..88d691c 100644 --- a/arch/powerpc/boot/dts/mpc8315erdb.dts +++ b/arch/powerpc/boot/dts/mpc8315erdb.dts @@ -257,7 +257,7 @@ device_type = "serial"; compatible = "ns16550"; reg = <0x4500 0x100>; - clock-frequency = <0>; + clock-frequency = <133333333>; interrupts = <9 0x8>; interrupt-parent = <&ipic>; }; @@ -267,7 +267,7 @@ device_type = "serial"; compatible = "ns16550"; reg = <0x4600 0x100>; - clock-frequency = <0>; + clock-frequency = <133333333>; interrupts = <10 0x8>; interrupt-parent = <&ipic>; }; -- 1.5.6.5 _______________________________________________ Linuxppc-dev mailing list [email protected] https://ozlabs.org/mailman/listinfo/linuxppc-dev
