[U-Boot] [PATCH] arm: socfpga: set the fpga global bit to disable HPS to FPGA signals
Marek Vasut
marex at denx.de
Thu Jan 7 03:21:40 CET 2016
On Wednesday, January 06, 2016 at 08:48:43 PM, dinguyen at opensource.altera.com
wrote:
> From: Dinh Nguyen <dinh.linux at 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 at 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 at denx.de>
btw Shouldn't you also fix the same thing in drivers/fpga/socfpga.c ? Even
better, can't we have a single function to enable/disable the interfaces?
Best regards,
Marek Vasut
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