[PATCH net-next v5 1/3] net: macb: add QUEUE_DISABLE capability to 3 compatibles

[Théo Lebrun]

>From datasheets, we know those 3 IP versions support Tx and Rx queue
disabling, ie bit 0 in RBQP and TBQP registers.

All revisions I've seen either support it on both Tx & Rx or don't
support it at all.

Sources:

   Compatible            | Match data         | Datasheet
   ----------------------|--------------------|-------------------------
   atmel,sama5d29-gem    | sama5d29_config    | DS60001764 [0]
   microchip,mpfs-macb   | mpfs_config        | header files [1]
   microchip,sama7g5-gem | sama7g5_gem_config | DS60001765 [2]

To contrast, check out the SAM9X60 DS60001579C datasheet [3] that does
not document bit 0 as anything special on page 1041 and page 1042.

[0]:
https://ww1.microchip.com/downloads/aemDocuments/documents/MPU32/ProductDocuments/DataSheets/SAMA5D29-Data-Sheet-ds60001764.pdf

[1]:
https://github.com/polarfire-soc/polarfire-soc-bare-metal-library/blob/614a67ab/src/platform/drivers/mss/mss_ethernet_mac/mss_ethernet_mac_regs.h#L200-L207

[2]:
https://ww1.microchip.com/downloads/aemDocuments/documents/MPU32/ProductDocuments/DataSheets/SAMA7G5-Series-Data-Sheet-DS60001765.pdf

[3]:
https://ww1.microchip.com/downloads/en/DeviceDoc/SAM9X60-Data-Sheet-DS60001579C.pdf

Signed-off-by: Théo Lebrun <theo.lebrun@xxxxxxxxxxx>
---
 drivers/net/ethernet/cadence/macb_main.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index 020a47353d01..625171fd3f9b 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -5743,7 +5743,7 @@ static const struct macb_config sama5d2_config = {
 
 static const struct macb_config sama5d29_config = {
 	.caps = MACB_CAPS_USRIO_DEFAULT_IS_MII_GMII | MACB_CAPS_GEM_HAS_PTP |
-		MACB_CAPS_USRIO_HAS_MII,
+		MACB_CAPS_USRIO_HAS_MII | MACB_CAPS_QUEUE_DISABLE,
 	.dma_burst_length = 16,
 	.usrio = &at91_default_usrio,
 };
@@ -5799,7 +5799,8 @@ static const struct macb_config mpfs_config = {
 	.caps = MACB_CAPS_GIGABIT_MODE_AVAILABLE |
 		MACB_CAPS_JUMBO |
 		MACB_CAPS_GEM_HAS_PTP |
-		MACB_CAPS_USRIO_HAS_TSUCLK_SOURCE,
+		MACB_CAPS_USRIO_HAS_TSUCLK_SOURCE |
+		MACB_CAPS_QUEUE_DISABLE,
 	.dma_burst_length = 16,
 	.init = init_reset_optional,
 	.usrio = &mpfs_usrio,
@@ -5812,7 +5813,7 @@ static const struct macb_config sama7g5_gem_config = {
 		MACB_CAPS_USRIO_DEFAULT_IS_MII_GMII |
 		MACB_CAPS_USRIO_HAS_REFCLK_SOURCE |
 		MACB_CAPS_MIIONRGMII | MACB_CAPS_GEM_HAS_PTP |
-		MACB_CAPS_USRIO_HAS_MII,
+		MACB_CAPS_USRIO_HAS_MII | MACB_CAPS_QUEUE_DISABLE,
 	.dma_burst_length = 16,
 	.usrio = &sama7g5_gem_usrio,
 };

-- 
2.56.0