On Thursday, January 07, 2016 at 04:23:09 PM, Dinh Nguyen wrote:
On 01/07/2016 09:03 AM, Dinh Nguyen wrote:
On 01/06/2016 09:20 PM, Marek Vasut wrote:
On Thursday, January 07, 2016 at 03:50:00 AM, Dinh Nguyen wrote:
On 01/06/2016 08:21 PM, Marek Vasut wrote:
On Wednesday, January 06, 2016 at 08:48:43 PM, dinguyen@opensource.altera.com
wrote:
From: Dinh Nguyen dinh.linux@gmail.com
We should be setting the FPGA Interface Group global bit that will correctly disable all interfaces between the FPGA and HPS.
Signed-off-by: Dinh Nguyen dinguyen@opensource.altera.com
drivers/fpga/socfpga.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/fpga/socfpga.c b/drivers/fpga/socfpga.c index 4448250..431e159 100644 --- a/drivers/fpga/socfpga.c +++ b/drivers/fpga/socfpga.c @@ -269,7 +269,7 @@ int socfpga_load(Altera_desc *desc, const void *rbf_data, size_t rbf_size) /* Prior programming the FPGA, all bridges need to be shut off */
/* Disable all signals from hps peripheral controller to fpga */
- writel(0, &sysmgr_regs->fpgaintfgrp_module);
writel(0, &sysmgr_regs->fpgaintfgrp_gbl);
/* Disable all signals from FPGA to HPS SDRAM */
#define SDR_CTRLGRP_FPGAPORTRST_ADDRESS 0x5080
Looks fine,
Acked-by: Marek Vasut marex@denx.de
btw Shouldn't you also fix the same thing in drivers/fpga/socfpga.c ? Even
I'm confused by what you mean here. The patch is for drivers/fpga/socfpga.c.
Oops, sorry, there is another one in arch/arm/mach-socfpga/misc.c . I mispasted the wrong filename.
Ah yes, then we should probably add a function to enable/disable the interfaces.
But I wonder if I wanted to enable the individual interfaces, i.e. the separate EMACs that is in fpgaintfgrp_module, would I need to enable the fpgaintfgrp_gbl bit?
Aren't you the one working for Altera? You're the one who should know the best :-) But I think this gbl bit is like the top-level killswitch, so you need to enable this one and only then you can fine-tune config of the subblocks (like the EMACs etc).
Best regards, Marek Vasut