diff --git a/src/gpu/jit/conv/config.cpp b/src/gpu/jit/conv/config.cpp
index 6ef86f0338f..b4d671abe3c 100644
--- a/src/gpu/jit/conv/config.cpp
+++ b/src/gpu/jit/conv/config.cpp
@@ -95,8 +95,8 @@ status_t conv_config_t::init_common_blocking() {
     // Set base blocks to align kernel blocking with layout blocking.
     if (is_fwd) {
         bh->set_base_iter_block("mb", src_layout.inner_block(0));
-        int src_g_blk = src_layout.inner_block(1);
-        int wei_g_blk = wei_layout.inner_block(0);
+        int src_g_blk = is_dw ? src_layout.inner_block(1) : 1;
+        int wei_g_blk = is_dw ? wei_layout.inner_block(0) : 1;
         bh->set_base_iter_block("g", src_g_blk, wei_g_blk);
         int src_ic_blk = src_layout.inner_block(2);
         int wei_ic_blk = wei_layout.inner_block(2);
@@ -572,7 +572,7 @@ struct nc_block_t {
     static nc_block_t get_default_blocking(type_t type, bool is_dw, int n,
             int c, int g, bool is_input, bool is_small_ic) {
         bool is_small_ic_input
-                = (type.size() <= 2 && is_input && !is_dw && is_small_ic);
+                = (type.size() <= 2 && is_input && g == 1 && is_small_ic);
         auto c_block = [&]() {
             // Special case for small input channel shapes with dpas.
             if (is_small_ic_input) {
@@ -580,14 +580,15 @@ struct nc_block_t {
                 return std::max(packed_dword_elems, utils::rnd_up_pow2(c));
             }
             auto default_c_blk = type.size() == 1 ? 32 : 16;
-            auto blk_dim = is_dw ? g : c;
+            auto blk_dim = is_dw ? g : g * c;
             return pick_block_rnd_up(blk_dim, default_c_blk);
         }();
 
         // Non-depthwise convolutions currently require channel is a multiple of
         // c_block. If that implementation restriction is removed, this logic
         // could be removed.
-        if (g > 1 && !is_dw && c % c_block != 0) c_block = 1;
+        if (g > 1 && !is_dw && c % c_block != 0 && c_block % c != 0)
+            c_block = 1;
 
         auto n_block = [&]() {
             auto default_n_blk = type.size() < 4 ? 32 : 16;
@@ -816,8 +817,8 @@ status_t conv_config_t::init_data_layouts(convolution_pd_t *conv_pd) {
 
     // If src/dst is nhwc then set the other one with any to nhwc too (except
     // 1st convolution).
-    bool is_small_ic_non_dw = is_small_ic() && !is_dw;
-    bool is_small_oc_non_dw = is_small_oc() && !is_dw;
+    bool is_small_ic_non_dw = is_small_ic() && g == 1;
+    bool is_small_oc_non_dw = is_small_oc() && g == 1;
     bool propagate_nhwc = (matches_tag(src_md, "axb") && !is_small_ic_non_dw)
             || matches_tag(dst_md, "axb");
     if (propagate_nhwc) {
@@ -1250,7 +1251,9 @@ void conv_config_t::init_bwd_d_optimize_strided(int iw_thr_blk) {
 
 void conv_config_t::init_use_ow_kw_grf_cache() {
     use_ow_kw_grf_cache = false;
-    if (!is_fwd || !is_small_ic() || kw < 3 || is_dw_large_mb()) return;
+    if (!is_fwd || !is_small_ic() || (is_small_ic() && !is_dw && g > 1)
+            || kw < 3 || is_dw_large_mb())
+        return;
     if (is_dp_fma()) return;
     if (fuse_spatial) return;