[PATCH v1 04/23] phy: marvell: cp110: initialize only enabled UTMI units

[Stefan Roese]

From: Omri Itach <omrii at marvell.com>

UTMI should be initialized only for enabled device tree nodes.

This fix overrides current internal configuration array
entry with the next DT entry data if error is detected
during the current DT entry parsing or the current port
is disabled.

This way the internal configuration structure will only
contain valid ports information obtained from the DT.

Signed-off-by: Omri Itach <omrii at marvell.com>
Signed-off-by: Ken Ma <make at marvell.com>
Signed-off-by: Stefan Roese <sr at denx.de>
---

 drivers/phy/marvell/comphy_cp110.c | 51 +++++++++++++++---------------
 1 file changed, 26 insertions(+), 25 deletions(-)

diff --git a/drivers/phy/marvell/comphy_cp110.c b/drivers/phy/marvell/comphy_cp110.c
index e4ab90121c74..82d869368858 100644
--- a/drivers/phy/marvell/comphy_cp110.c
+++ b/drivers/phy/marvell/comphy_cp110.c
@@ -715,7 +715,7 @@ static int comphy_utmi_power_up(u32 utmi_index, void __iomem *utmi_base_addr,
  * the init split in 3 parts:
  * 1. Power down transceiver and PLL
  * 2. UTMI PHY configure
- * 3. Powe up transceiver and PLL
+ * 3. Power up transceiver and PLL
  * Note: - Power down/up should be once for both UTMI PHYs
  *       - comphy_dedicated_phys_init call this function if at least there is
  *         one UTMI PHY exists in FDT blob. access to cp110_utmi_data[0] is
@@ -782,45 +782,47 @@ static void comphy_utmi_phy_init(u32 utmi_phy_count,
 void comphy_dedicated_phys_init(void)
 {
 	struct utmi_phy_data cp110_utmi_data[MAX_UTMI_PHY_COUNT];
-	int node;
-	int i;
+	int node = -1;
+	int node_idx;
 
 	debug_enter();
 	debug("Initialize USB UTMI PHYs\n");
 
-	/* Find the UTMI phy node in device tree and go over them */
-	node = fdt_node_offset_by_compatible(gd->fdt_blob, -1,
-					     "marvell,mvebu-utmi-2.6.0");
+	for (node_idx = 0; node_idx < MAX_UTMI_PHY_COUNT;) {
+		/* Find the UTMI phy node in device tree */
+		node = fdt_node_offset_by_compatible(gd->fdt_blob, node,
+						     "marvell,mvebu-utmi-2.6.0");
+		if (node <= 0)
+			break;
+
+		/* check if node is enabled */
+		if (!fdtdec_get_is_enabled(gd->fdt_blob, node))
+			continue;
 
-	i = 0;
-	while (node > 0) {
 		/* get base address of UTMI phy */
-		cp110_utmi_data[i].utmi_base_addr =
+		cp110_utmi_data[node_idx].utmi_base_addr =
 			(void __iomem *)fdtdec_get_addr_size_auto_noparent(
 				gd->fdt_blob, node, "reg", 0, NULL, true);
-		if (cp110_utmi_data[i].utmi_base_addr == NULL) {
+		if (!cp110_utmi_data[node_idx].utmi_base_addr) {
 			pr_err("UTMI PHY base address is invalid\n");
-			i++;
 			continue;
 		}
 
 		/* get usb config address */
-		cp110_utmi_data[i].usb_cfg_addr =
+		cp110_utmi_data[node_idx].usb_cfg_addr =
 			(void __iomem *)fdtdec_get_addr_size_auto_noparent(
 				gd->fdt_blob, node, "reg", 1, NULL, true);
-		if (cp110_utmi_data[i].usb_cfg_addr == NULL) {
+		if (!cp110_utmi_data[node_idx].usb_cfg_addr) {
 			pr_err("UTMI PHY base address is invalid\n");
-			i++;
 			continue;
 		}
 
 		/* get UTMI config address */
-		cp110_utmi_data[i].utmi_cfg_addr =
+		cp110_utmi_data[node_idx].utmi_cfg_addr =
 			(void __iomem *)fdtdec_get_addr_size_auto_noparent(
 				gd->fdt_blob, node, "reg", 2, NULL, true);
-		if (cp110_utmi_data[i].utmi_cfg_addr == NULL) {
+		if (!cp110_utmi_data[node_idx].utmi_cfg_addr) {
 			pr_err("UTMI PHY base address is invalid\n");
-			i++;
 			continue;
 		}
 
@@ -828,21 +830,20 @@ void comphy_dedicated_phys_init(void)
 		 * get the port number (to check if the utmi connected to
 		 * host/device)
 		 */
-		cp110_utmi_data[i].utmi_phy_port = fdtdec_get_int(
+		cp110_utmi_data[node_idx].utmi_phy_port = fdtdec_get_int(
 			gd->fdt_blob, node, "utmi-port", UTMI_PHY_INVALID);
-		if (cp110_utmi_data[i].utmi_phy_port == UTMI_PHY_INVALID) {
+		if (cp110_utmi_data[node_idx].utmi_phy_port ==
+							UTMI_PHY_INVALID) {
 			pr_err("UTMI PHY port type is invalid\n");
-			i++;
 			continue;
 		}
 
-		node = fdt_node_offset_by_compatible(
-			gd->fdt_blob, node, "marvell,mvebu-utmi-2.6.0");
-		i++;
+		/* count valid UTMI unit */
+		node_idx++;
 	}
 
-	if (i > 0)
-		comphy_utmi_phy_init(i, cp110_utmi_data);
+	if (node_idx > 0)
+		comphy_utmi_phy_init(node_idx, cp110_utmi_data);
 
 	debug_exit();
 }
-- 
2.31.0