Re: [PATCH] powerpc/85xx: do not force PHYS_64BIT on the P1022DS
Kumar Gala wrote:
If you want me to apply this please also provided a 32-bit .dts for
p1022ds. This should be pretty trivial based on my recent .dts
cleanups.
I think I found another bug in the 36-bit DTS. Looking at U-Boot, I see this:
#ifdef CONFIG_PHYS_64BIT
#define CONFIG_SYS_PCIE2_MEM_BUS0xe000
#define CONFIG_SYS_PCIE2_MEM_PHYS 0xc2000ull
#else
#define CONFIG_SYS_PCIE2_MEM_BUS0xa000
#define CONFIG_SYS_PCIE2_MEM_PHYS 0xa000
#endif
But the 36-bit DTS has this:
pci0: pcie@ffe09000 {
reg = 0x0 0xffe09000 0 0x1000;
ranges = 0x200 0x0 0xa000 0xc 0x2000 0x0 0x2000
0x100 0x0 0x 0xf 0xffc1 0x0 0x1;
I don't think these match. I think the first 'ranges' line should have
0xe000 instead of 0xa000.
I see the same problem with the other two PCI busses. It looks like the
physical address is correct, but the BUS address is wrong (it's using the
32-bit bus address instead of the 36-bit bus address).
--
Timur Tabi
Linux kernel developer at Freescale
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Re: [PATCH] powerpc/85xx: do not force PHYS_64BIT on the P1022DS
On Nov 24, 2011, at 1:12 AM, Kumar Gala kumar.g...@freescale.com wrote: If you want me to apply this please also provided a 32-bit .dts for p1022ds. This should be pretty trivial based on my recent .dts cleanups. Ok, I'll do that. ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
Re: [PATCH] powerpc/85xx: do not force PHYS_64BIT on the P1022DS
On Nov 3, 2011, at 2:38 PM, Timur Tabi wrote: Kconfig option PHYS_64BIT sets the size of phys_addr_t to 64 bits, which allows support for a 36-bit physical address space. With this option, the kernel can support more than 2GB of RAM, but the larger address size impacts performance slightly. By including select PHYS_64BIT in the Kconfig for a particular board, that option is forced enabled, and it becomes impossible to create a 32-bit kernel. Instead, we should depend on the defconfig to enable this option. We still build a 36-bit kernel by default, and we also allow users to build 32-bit kernels if they really want. Signed-off-by: Timur Tabi ti...@freescale.com --- arch/powerpc/platforms/85xx/Kconfig |1 - 1 files changed, 0 insertions(+), 1 deletions(-) If you want me to apply this please also provided a 32-bit .dts for p1022ds. This should be pretty trivial based on my recent .dts cleanups. - k ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
