1. Set SCP cache size before loading SCP FW. (8KB+8KB)
2. Adjust ipi_buf_offset from 0x7bdb0 to 0x3BDB0 for enableing cache
SCP side
- IPI Buffer: 0x3BDB0 <-> 0x3C000
- Cache: 0x3C000 <-> 0x40000
Signed-off-by: Allen-KH Cheng <allen-kh.cheng@xxxxxxxxxxxx>
---
drivers/remoteproc/mtk_scp.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index 38609153bf64..24065b6b4da8 100644
--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c
@@ -401,6 +401,14 @@ static int mt8186_scp_before_load(struct mtk_scp *scp)
writel(0x0, scp->reg_base + MT8186_SCP_L1_SRAM_PD_P1);
writel(0x0, scp->reg_base + MT8186_SCP_L1_SRAM_PD_p2);
+ /*
+ * Set I-cache and D-cache size before loading SCP FW.
+ * SCP SRAM logical address may change when cache size setting differs.
+ */
+ writel(MT8183_SCP_CACHE_CON_WAYEN | MT8183_SCP_CACHESIZE_8KB,
+ scp->reg_base + MT8183_SCP_CACHE_CON);
+ writel(MT8183_SCP_CACHESIZE_8KB, scp->reg_base + MT8183_SCP_DCACHE_CON);
+
return 0;
}
@@ -905,7 +913,7 @@ static const struct mtk_scp_of_data mt8186_of_data = {
.scp_da_to_va = mt8183_scp_da_to_va,
.host_to_scp_reg = MT8183_HOST_TO_SCP,
.host_to_scp_int_bit = MT8183_HOST_IPC_INT_BIT,
- .ipi_buf_offset = 0x7bdb0,
+ .ipi_buf_offset = 0x3bdb0,
};
static const struct mtk_scp_of_data mt8192_of_data = {
--
2.18.0
