powerpc/85xx: Update device tree handling for SRIO

Update device tree handling for SRIO controller to support updated
fsl,srio device tree binding.

We handle disabling of individual ports, the whole controller, RMU, and
RMAN.  Additionally, we setup the SRIO related LIODNs in the device
tree.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

1 files changed, 62 insertions, 10 deletions

diff --git a/arch/powerpc/cpu/mpc8xxx/fdt.c b/arch/powerpc/cpu/mpc8xxx/fdt.c
index 5bb9f53..112c603 100644
--- a/arch/powerpc/cpu/mpc8xxx/fdt.c
+++ b/arch/powerpc/cpu/mpc8xxx/fdt.c
@@ -275,21 +275,73 @@ int fdt_fixup_phy_connection(void *blob, int offset, phy_interface_t phyc)
 }
 
 #ifdef CONFIG_SYS_SRIO
+static inline void ft_disable_srio_port(void *blob, int srio_off, int port)
+{
+	int off = fdt_node_offset_by_prop_value(blob, srio_off,
+			"cell-index", &port, 4);
+	if (off >= 0) {
+		off = fdt_setprop_string(blob, off, "status", "disabled");
+		if (off > 0)
+			printf("WARNING unable to set status for fsl,srio "
+				"port %d: %s\n", port, fdt_strerror(off));
+	}
+}
+
+static inline void ft_disable_rman(void *blob)
+{
+	int off = fdt_node_offset_by_compatible(blob, -1, "fsl,rman");
+	if (off >= 0) {
+		off = fdt_setprop_string(blob, off, "status", "disabled");
+		if (off > 0)
+			printf("WARNING unable to set status for fsl,rman %s\n",
+				fdt_strerror(off));
+	}
+}
+
+static inline void ft_disable_rmu(void *blob)
+{
+	int off = fdt_node_offset_by_compatible(blob, -1, "fsl,srio-rmu");
+	if (off >= 0) {
+		off = fdt_setprop_string(blob, off, "status", "disabled");
+		if (off > 0)
+			printf("WARNING unable to set status for "
+				"fsl,srio-rmu %s\n", fdt_strerror(off));
+	}
+}
+
 void ft_srio_setup(void *blob)
 {
+	int srio1_used = 0, srio2_used = 0;
+	int srio_off;
+
+	/* search for srio node, if doesn't exist just return - nothing todo */
+	srio_off = fdt_node_offset_by_compatible(blob, -1, "fsl,srio");
+	if (srio_off < 0)
+		return ;
+
 #ifdef CONFIG_SRIO1
-	if (!is_serdes_configured(SRIO1)) {
-		fdt_del_node_and_alias(blob, "rio0");
-	}
-#else
-	fdt_del_node_and_alias(blob, "rio0");
+	if (is_serdes_configured(SRIO1))
+		srio1_used = 1;
 #endif
 #ifdef CONFIG_SRIO2
-	if (!is_serdes_configured(SRIO2)) {
-		fdt_del_node_and_alias(blob, "rio1");
-	}
-#else
-	fdt_del_node_and_alias(blob, "rio1");
+	if (is_serdes_configured(SRIO2))
+		srio2_used = 1;
 #endif
+
+	/* mark port1 disabled */
+	if (!srio1_used)
+		ft_disable_srio_port(blob, srio_off, 1);
+
+	/* mark port2 disabled */
+	if (!srio2_used)
+		ft_disable_srio_port(blob, srio_off, 2);
+
+	/* if both ports not used, disable controller, rmu and rman */
+	if (!srio1_used && !srio2_used) {
+		fdt_setprop_string(blob, srio_off, "status", "disabled");
+
+		ft_disable_rman(blob);
+		ft_disable_rmu(blob);
+	}
 }
 #endif