diff --git a/src/freedreno/vulkan/tu_blit.c b/src/freedreno/vulkan/tu_blit.c
index 36d071cbd65..da5fe3b3654 100644
--- a/src/freedreno/vulkan/tu_blit.c
+++ b/src/freedreno/vulkan/tu_blit.c
@@ -81,6 +81,7 @@ blit_image_info(const struct tu_blit_surf *img, bool src, bool stencil_read)
 static void
 emit_blit_step(struct tu_cmd_buffer *cmdbuf, const struct tu_blit *blt)
 {
+   struct tu_physical_device *phys_dev = cmdbuf->device->physical_device;
    struct tu_cs *cs = &cmdbuf->cs;
 
    tu_cs_reserve_space(cmdbuf->device, cs, 66);
@@ -201,7 +202,7 @@ emit_blit_step(struct tu_cmd_buffer *cmdbuf, const struct tu_blit *blt)
                   A6XX_SP_2D_SRC_FORMAT_MASK(0xf));
 
    tu_cs_emit_pkt4(cs, REG_A6XX_RB_UNKNOWN_8E04, 1);
-   tu_cs_emit(cs, 0x01000000);
+   tu_cs_emit(cs, phys_dev->magic.RB_UNKNOWN_8E04_blit);
 
    tu_cs_emit_pkt7(cs, CP_BLIT, 1);
    tu_cs_emit(cs, CP_BLIT_0_OP(BLIT_OP_SCALE));
diff --git a/src/freedreno/vulkan/tu_cmd_buffer.c b/src/freedreno/vulkan/tu_cmd_buffer.c
index 3a0527c1849..6c251757c94 100644
--- a/src/freedreno/vulkan/tu_cmd_buffer.c
+++ b/src/freedreno/vulkan/tu_cmd_buffer.c
@@ -901,6 +901,8 @@ tu6_emit_restart_index(struct tu_cs *cs, uint32_t restart_index)
 static void
 tu6_init_hw(struct tu_cmd_buffer *cmd, struct tu_cs *cs)
 {
+   struct tu_physical_device *phys_dev = cmd->device->physical_device;
+
    VkResult result = tu_cs_reserve_space(cmd->device, cs, 256);
    if (result != VK_SUCCESS) {
       cmd->record_result = result;
@@ -911,7 +913,7 @@ tu6_init_hw(struct tu_cmd_buffer *cmd, struct tu_cs *cs)
 
    tu_cs_emit_write_reg(cs, REG_A6XX_HLSQ_UPDATE_CNTL, 0xfffff);
 
-   tu_cs_emit_write_reg(cs, REG_A6XX_RB_CCU_CNTL, 0x7c400004);
+   tu_cs_emit_write_reg(cs, REG_A6XX_RB_CCU_CNTL, phys_dev->magic.RB_CCU_CNTL_gmem);
    tu_cs_emit_write_reg(cs, REG_A6XX_RB_UNKNOWN_8E04, 0x00100000);
    tu_cs_emit_write_reg(cs, REG_A6XX_SP_UNKNOWN_AE04, 0x8);
    tu_cs_emit_write_reg(cs, REG_A6XX_SP_UNKNOWN_AE00, 0);
@@ -1202,6 +1204,7 @@ emit_vsc_overflow_test(struct tu_cmd_buffer *cmd, struct tu_cs *cs)
 static void
 tu6_emit_binning_pass(struct tu_cmd_buffer *cmd, struct tu_cs *cs)
 {
+   struct tu_physical_device *phys_dev = cmd->device->physical_device;
    const struct tu_tiling_config *tiling = &cmd->state.tiling_config;
 
    uint32_t x1 = tiling->tile0.offset.x;
@@ -1230,10 +1233,10 @@ tu6_emit_binning_pass(struct tu_cmd_buffer *cmd, struct tu_cs *cs)
    update_vsc_pipe(cmd, cs);
 
    tu_cs_emit_regs(cs,
-                   A6XX_PC_UNKNOWN_9805(.unknown = 0x1));
+                   A6XX_PC_UNKNOWN_9805(.unknown = phys_dev->magic.PC_UNKNOWN_9805));
 
    tu_cs_emit_regs(cs,
-                   A6XX_SP_UNKNOWN_A0F8(.unknown = 0x1));
+                   A6XX_SP_UNKNOWN_A0F8(.unknown = phys_dev->magic.SP_UNKNOWN_A0F8));
 
    tu_cs_emit_pkt7(cs, CP_EVENT_WRITE, 1);
    tu_cs_emit(cs, UNK_2C);
@@ -1283,6 +1286,8 @@ tu6_emit_binning_pass(struct tu_cmd_buffer *cmd, struct tu_cs *cs)
 static void
 tu6_render_begin(struct tu_cmd_buffer *cmd, struct tu_cs *cs)
 {
+   struct tu_physical_device *phys_dev = cmd->device->physical_device;
+
    VkResult result = tu_cs_reserve_space(cmd->device, cs, 1024);
    if (result != VK_SUCCESS) {
       cmd->record_result = result;
@@ -1315,9 +1320,9 @@ tu6_render_begin(struct tu_cmd_buffer *cmd, struct tu_cs *cs)
       tu_cs_emit_regs(cs,
                       A6XX_VFD_MODE_CNTL(0));
 
-      tu_cs_emit_regs(cs, A6XX_PC_UNKNOWN_9805(.unknown = 0x1));
+      tu_cs_emit_regs(cs, A6XX_PC_UNKNOWN_9805(.unknown = phys_dev->magic.PC_UNKNOWN_9805));
 
-      tu_cs_emit_regs(cs, A6XX_SP_UNKNOWN_A0F8(.unknown = 0x1));
+      tu_cs_emit_regs(cs, A6XX_SP_UNKNOWN_A0F8(.unknown = phys_dev->magic.SP_UNKNOWN_A0F8));
 
       tu_cs_emit_pkt7(cs, CP_SKIP_IB2_ENABLE_GLOBAL, 1);
       tu_cs_emit(cs, 0x1);
diff --git a/src/freedreno/vulkan/tu_device.c b/src/freedreno/vulkan/tu_device.c
index b68f0f4540f..f7e3e10fa4b 100644
--- a/src/freedreno/vulkan/tu_device.c
+++ b/src/freedreno/vulkan/tu_device.c
@@ -260,6 +260,10 @@ tu_physical_device_init(struct tu_physical_device *device,
    case 640:
       device->tile_align_w = 64;
       device->tile_align_h = 16;
+      device->magic.RB_UNKNOWN_8E04_blit = 0x01000000;
+      device->magic.RB_CCU_CNTL_gmem     = 0x7c400004;
+      device->magic.PC_UNKNOWN_9805 = 0x1;
+      device->magic.SP_UNKNOWN_A0F8 = 0x1;
       break;
    default:
       result = vk_errorf(instance, VK_ERROR_INITIALIZATION_FAILED,
diff --git a/src/freedreno/vulkan/tu_private.h b/src/freedreno/vulkan/tu_private.h
index 934c907b98c..823f5819b95 100644
--- a/src/freedreno/vulkan/tu_private.h
+++ b/src/freedreno/vulkan/tu_private.h
@@ -316,6 +316,13 @@ struct tu_physical_device
    uint32_t tile_align_w;
    uint32_t tile_align_h;
 
+   struct {
+      uint32_t RB_UNKNOWN_8E04_blit;    /* for CP_BLIT's */
+      uint32_t RB_CCU_CNTL_gmem;        /* for GMEM */
+      uint32_t PC_UNKNOWN_9805;
+      uint32_t SP_UNKNOWN_A0F8;
+   } magic;
+
    /* This is the drivers on-disk cache used as a fallback as opposed to
     * the pipeline cache defined by apps.
     */