kmp204x: complete the reset sequence and PRST configuration

This adds the reset support for the following devices that was until
then not implemented:
- BFTIC4
- QSFPs

This also fixes the configuration of the prst behaviour for the other
resets: Only the u-boot and kernel relevant subsystems are taken out of
reset (pcie, ZL30158, and front eth phy).

Most of the prst config move to misc_init_f(), except for the PCIe
related ones that are in pci_init_board and the bftic and ZL30158 ones
that should be done as soon as possible.

Only the behavior of the Hooper reset is changed according to the
documentation as the application is not able to not configure the switch
when it is not reset.

Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>

1 files changed, 10 insertions, 7 deletions

diff --git a/board/keymile/kmp204x/pci.c b/board/keymile/kmp204x/pci.c
index a484eb5749..2b0b054a11 100644
--- a/board/keymile/kmp204x/pci.c
+++ b/board/keymile/kmp204x/pci.c
@@ -94,20 +94,23 @@ err_out:
 }
 
 #define PCIE_SW_RST	14
-#define PEXHC_SW_RST	13
-#define HOOPER_SW_RST	12
+#define PEXHC_RST	13
+#define HOOPER_RST	12
 
 void pci_init_board(void)
 {
-	/* first wait for the PCIe FPGA to be configured
+	qrio_prstcfg(PCIE_SW_RST, PRSTCFG_POWUP_UNIT_CORE_RST);
+	qrio_prstcfg(PEXHC_RST, PRSTCFG_POWUP_UNIT_CORE_RST);
+	qrio_prstcfg(HOOPER_RST, PRSTCFG_POWUP_UNIT_CORE_RST);
+
+	/* wait for the PCIe FPGA to be configured
 	 * it has been triggered earlier in board_early_init_r */
-	int ret = wait_for_fpga_config();
-	if (ret)
+	if (wait_for_fpga_config())
 		printf("error finishing PCIe FPGA config\n");
 
 	qrio_prst(PCIE_SW_RST, false, false);
-	qrio_prst(PEXHC_SW_RST, false, false);
-	qrio_prst(HOOPER_SW_RST, false, false);
+	qrio_prst(PEXHC_RST, false, false);
+	qrio_prst(HOOPER_RST, false, false);
 	/* Hooper is not direcly PCIe capable */
 	mdelay(50);