Re: [PATCH] net/axgbe: add support for V4000 Kracken2e

["Sebastian, Selwin" <Selwin.Sebastian@amd.com>]

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[AMD Official Use Only - AMD Internal Distribution Only]

Acked-by: Selwin Sebastian<selwin.sebastian@amd.com>

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________________________________
From: Govindaiah, Vinay <Vinay.Govindaiah@amd.com>
Sent: Tuesday, December 2, 2025 12:41:52 PM
To: dev@dpdk.org <dev@dpdk.org>
Cc: Sebastian, Selwin <Selwin.Sebastian@amd.com>; Govindaiah, Vinay <Vinay.Govindaiah@amd.com>
Subject: [PATCH] net/axgbe: add support for V4000 Kracken2e

add device ID's for Kracken2e to enable
driver to support this device.

Signed-off-by: Vinay Govindaiah <vigovind@amd.com>
---
 drivers/net/axgbe/axgbe_common.h |  2 ++
 drivers/net/axgbe/axgbe_ethdev.c | 16 ++++++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/drivers/net/axgbe/axgbe_common.h b/drivers/net/axgbe/axgbe_common.h
index 93e6c177b6..6e4e23027d 100644
--- a/drivers/net/axgbe/axgbe_common.h
+++ b/drivers/net/axgbe/axgbe_common.h
@@ -905,6 +905,8 @@
 #define PCS_V2_RV_WINDOW_SELECT         0x1064
 #define PCS_V2_YC_WINDOW_DEF            0x18060
 #define PCS_V2_YC_WINDOW_SELECT         0x18064
+#define PCS_KR_WINDOW_SELECT            0x8080
+#define PCS_KR_WINDOW_DEF               0x8060

 /* PCS register entry bit positions and sizes */
 #define PCS_V2_WINDOW_DEF_OFFSET_INDEX  6
diff --git a/drivers/net/axgbe/axgbe_ethdev.c b/drivers/net/axgbe/axgbe_ethdev.c
index cf3b0d9ef5..aa7d332b44 100644
--- a/drivers/net/axgbe/axgbe_ethdev.c
+++ b/drivers/net/axgbe/axgbe_ethdev.c
@@ -185,6 +185,7 @@ static const struct axgbe_xstats axgbe_xstats_strings[] = {

 #define Fam17h  0x17
 #define Fam19h  0x19
+#define        Fam1Ah  0x1A

 #define CPUID_VENDOR_AuthenticAMD_ebx   0x68747541
 #define CPUID_VENDOR_AuthenticAMD_ecx   0x444d4163
@@ -2291,6 +2292,21 @@ eth_axgbe_dev_init(struct rte_eth_dev *eth_dev)
                         unknown_cpu = 1;
                 }
                 break;
+               case Fam1Ah:
+               /* V4000 (krackan2e) */
+               if (cpu_model == 0x68) {
+                       pdata->xpcs_window_def_reg = PCS_KR_WINDOW_DEF;
+                       pdata->xpcs_window_sel_reg = PCS_KR_WINDOW_SELECT;
+
+                       /* V4000-Krkan2e devices do not need cdr workaround */
+                       pdata->vdata->an_cdr_workaround = 0;
+
+                       /* V4000-Krkan2e devices do not need rrc */
+                       pdata->vdata->enable_rrc = 0;
+               } else {
+                       unknown_cpu = 1;
+               }
+               break;
                 default:
                         unknown_cpu = 1;
                         break;
--
2.34.1


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