diff --git a/src/freedreno/computerator/a6xx.cc b/src/freedreno/computerator/a6xx.cc
index 4a712b32d68..e0adbfd4c31 100644
--- a/src/freedreno/computerator/a6xx.cc
+++ b/src/freedreno/computerator/a6xx.cc
@@ -180,14 +180,18 @@ cs_program_emit(struct fd_ringbuffer *ring, struct kernel *kernel)
    }
 
    uint32_t shared_size = MAX2(((int)v->shared_size - 1) / 1024, 1);
+   enum a6xx_const_ram_mode mode =
+      v->constlen > 256 ? CONSTLEN_512 :
+      (v->constlen > 192 ? CONSTLEN_256 :
+      (v->constlen > 128 ? CONSTLEN_192 : CONSTLEN_128));
    OUT_PKT4(ring, REG_A6XX_SP_CS_CTRL_REG1, 1);
    OUT_RING(ring, A6XX_SP_CS_CTRL_REG1_SHARED_SIZE(shared_size) |
-                  A6XX_SP_CS_CTRL_REG1_CONSTANTRAMMODE(CONSTLEN_256));
+                  A6XX_SP_CS_CTRL_REG1_CONSTANTRAMMODE(mode));
 
    if (CHIP == A6XX && a6xx_backend->info->a6xx.has_lpac) {
       OUT_PKT4(ring, REG_A6XX_HLSQ_CS_CTRL_REG1, 1);
       OUT_RING(ring, A6XX_HLSQ_CS_CTRL_REG1_SHARED_SIZE(1) |
-                     A6XX_HLSQ_CS_CTRL_REG1_CONSTANTRAMMODE(CONSTLEN_256));
+                     A6XX_HLSQ_CS_CTRL_REG1_CONSTANTRAMMODE(mode));
    }
 
    uint32_t local_invocation_id, work_group_id;
diff --git a/src/freedreno/vulkan/tu_shader.cc b/src/freedreno/vulkan/tu_shader.cc
index e084958227c..110be1edca6 100644
--- a/src/freedreno/vulkan/tu_shader.cc
+++ b/src/freedreno/vulkan/tu_shader.cc
@@ -1530,14 +1530,18 @@ tu6_emit_cs_config(struct tu_cs *cs,
    tu6_emit_xs(cs, MESA_SHADER_COMPUTE, v, pvtmem, binary_iova);
 
    uint32_t shared_size = MAX2(((int)v->shared_size - 1) / 1024, 1);
+   enum a6xx_const_ram_mode mode =
+      v->constlen > 256 ? CONSTLEN_512 :
+      (v->constlen > 192 ? CONSTLEN_256 :
+      (v->constlen > 128 ? CONSTLEN_192 : CONSTLEN_128));
    tu_cs_emit_pkt4(cs, REG_A6XX_SP_CS_CTRL_REG1, 1);
    tu_cs_emit(cs, A6XX_SP_CS_CTRL_REG1_SHARED_SIZE(shared_size) |
-                  A6XX_SP_CS_CTRL_REG1_CONSTANTRAMMODE(CONSTLEN_256));
+                  A6XX_SP_CS_CTRL_REG1_CONSTANTRAMMODE(mode));
 
    if (CHIP == A6XX && cs->device->physical_device->info->a6xx.has_lpac) {
       tu_cs_emit_pkt4(cs, REG_A6XX_HLSQ_CS_CTRL_REG1, 1);
       tu_cs_emit(cs, A6XX_HLSQ_CS_CTRL_REG1_SHARED_SIZE(shared_size) |
-                     A6XX_HLSQ_CS_CTRL_REG1_CONSTANTRAMMODE(CONSTLEN_256));
+                     A6XX_HLSQ_CS_CTRL_REG1_CONSTANTRAMMODE(mode));
    }
 
    uint32_t local_invocation_id =
diff --git a/src/gallium/drivers/freedreno/a6xx/fd6_compute.cc b/src/gallium/drivers/freedreno/a6xx/fd6_compute.cc
index 210a9db824c..a82b1517f18 100644
--- a/src/gallium/drivers/freedreno/a6xx/fd6_compute.cc
+++ b/src/gallium/drivers/freedreno/a6xx/fd6_compute.cc
@@ -220,14 +220,18 @@ fd6_launch_grid(struct fd_context *ctx, const struct pipe_grid_info *info) in_dt
 
    uint32_t shared_size =
       MAX2(((int)(cs->v->cs.req_local_mem + info->variable_shared_mem) - 1) / 1024, 1);
+   enum a6xx_const_ram_mode mode =
+      cs->v->constlen > 256 ? CONSTLEN_512 :
+      (cs->v->constlen > 192 ? CONSTLEN_256 :
+      (cs->v->constlen > 128 ? CONSTLEN_192 : CONSTLEN_128));
    OUT_PKT4(ring, REG_A6XX_SP_CS_CTRL_REG1, 1);
    OUT_RING(ring, A6XX_SP_CS_CTRL_REG1_SHARED_SIZE(shared_size) |
-                     A6XX_SP_CS_CTRL_REG1_CONSTANTRAMMODE(CONSTLEN_256));
+                     A6XX_SP_CS_CTRL_REG1_CONSTANTRAMMODE(mode));
 
    if (CHIP == A6XX && ctx->screen->info->a6xx.has_lpac) {
       OUT_PKT4(ring, REG_A6XX_HLSQ_CS_CTRL_REG1, 1);
       OUT_RING(ring, A6XX_HLSQ_CS_CTRL_REG1_SHARED_SIZE(shared_size) |
-                        A6XX_HLSQ_CS_CTRL_REG1_CONSTANTRAMMODE(CONSTLEN_256));
+                        A6XX_HLSQ_CS_CTRL_REG1_CONSTANTRAMMODE(mode));
    }
 
    const unsigned *local_size =