diff mbox series

[v5,net-next,08/13] net: dsa: felix: add functionality when not all ports are supported

Message ID 20230127193559.1001051-9-colin.foster@in-advantage.com (mailing list archive)
State Accepted
Commit de879a016a94a670fafeb3eb03b3d5803d81ab37
Delegated to: Netdev Maintainers
Headers show
Series add support for the the vsc7512 internal copper phys | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next, async
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers success CCed 11 of 11 maintainers
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 25 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Colin Foster Jan. 27, 2023, 7:35 p.m. UTC
When the Felix driver would probe the ports and verify functionality, it
would fail if it hit single port mode that wasn't supported by the driver.

The initial case for the VSC7512 driver will have physical ports that
exist, but aren't supported by the driver implementation. Add the
OCELOT_PORT_MODE_NONE macro to handle this scenario, and allow the Felix
driver to continue with all the ports that are currently functional.

Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
---

v5
    * No changes

v4
    * New patch

---
 drivers/net/dsa/ocelot/felix.c | 11 ++++++++---
 drivers/net/dsa/ocelot/felix.h |  1 +
 2 files changed, 9 insertions(+), 3 deletions(-)

Comments

Florian Fainelli Jan. 27, 2023, 7:41 p.m. UTC | #1
On 1/27/2023 11:35 AM, Colin Foster wrote:
> When the Felix driver would probe the ports and verify functionality, it
> would fail if it hit single port mode that wasn't supported by the driver.
> 
> The initial case for the VSC7512 driver will have physical ports that
> exist, but aren't supported by the driver implementation. Add the
> OCELOT_PORT_MODE_NONE macro to handle this scenario, and allow the Felix
> driver to continue with all the ports that are currently functional.
> 
> Signed-off-by: Colin Foster <colin.foster@in-advantage.com>

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
diff mbox series

Patch

diff --git a/drivers/net/dsa/ocelot/felix.c b/drivers/net/dsa/ocelot/felix.c
index d3ff6e8a82e9..d4cc9e60f369 100644
--- a/drivers/net/dsa/ocelot/felix.c
+++ b/drivers/net/dsa/ocelot/felix.c
@@ -1273,10 +1273,15 @@  static int felix_parse_ports_node(struct felix *felix,
 
 		err = felix_validate_phy_mode(felix, port, phy_mode);
 		if (err < 0) {
-			dev_err(dev, "Unsupported PHY mode %s on port %d\n",
-				phy_modes(phy_mode), port);
+			dev_info(dev, "Unsupported PHY mode %s on port %d\n",
+				 phy_modes(phy_mode), port);
 			of_node_put(child);
-			return err;
+
+			/* Leave port_phy_modes[port] = 0, which is also
+			 * PHY_INTERFACE_MODE_NA. This will perform a
+			 * best-effort to bring up as many ports as possible.
+			 */
+			continue;
 		}
 
 		port_phy_modes[port] = phy_mode;
diff --git a/drivers/net/dsa/ocelot/felix.h b/drivers/net/dsa/ocelot/felix.h
index 9e1ae1dde0d9..d5d0b30c0b75 100644
--- a/drivers/net/dsa/ocelot/felix.h
+++ b/drivers/net/dsa/ocelot/felix.h
@@ -7,6 +7,7 @@ 
 #define ocelot_to_felix(o)		container_of((o), struct felix, ocelot)
 #define FELIX_MAC_QUIRKS		OCELOT_QUIRK_PCS_PERFORMS_RATE_ADAPTATION
 
+#define OCELOT_PORT_MODE_NONE		0
 #define OCELOT_PORT_MODE_INTERNAL	BIT(0)
 #define OCELOT_PORT_MODE_SGMII		BIT(1)
 #define OCELOT_PORT_MODE_QSGMII		BIT(2)