Hello Dear U-Boot support,
Please comment on this also.
I have custom board with Altera Arria 5 SocFpga onboard.
U-Boot version: 2016.03-rc1
I had probems with configuring fpga from u-boot:
U-Boot > bridge disable
U-Boot > run config_fpga
FPGA: Could not configure
Command failed, result=-2
So, fpga did not reached configuration state in certain timeout
(FPGAMGRREGS_MODE_CFGPHASE).
My workaround was based on U-Boot 2013 version were I had no such problem.
I fixed it like this:
diff --git a/drivers/fpga/socfpga.c b/drivers/fpga/socfpga.c
index 431e159..423ee23 100644
--- a/drivers/fpga/socfpga.c
+++ b/drivers/fpga/socfpga.c
@@ -269,7 +269,11 @@ 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 */
+#ifdef CONFIG_WORKAROUND
+ writel(0, &sysmgr_regs->fpgaintfgrp_module);
+#else
writel(0, &sysmgr_regs->fpgaintfgrp_gbl);
+#endif
Please evaluate my workaround.
Maybe I had to make some additional step before configuring fpga?
Best regards,
Denis Bakhvalov
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