feat(plat/rcar3): add process of SSCG setting for R-Car D3
- Added the condition where output the SSCG (MD12) setting
to log for R-Car D3.
- Added the process to switching the bit rate of SCIF by the
SSCG (MD12) setting value for R-Car D3.
Signed-off-by: Hideyuki Nitta <hideyuki.nitta.jf@hitachi.com>
Signed-off-by: Toshiyuki Ogasahara <toshiyuki.ogasahara.bo@hitachi.com>
Signed-off-by: Yoshifumi Hosoya <yoshifumi.hosoya.wj@renesas.com>
Change-Id: Iaf07fa4df12dc233af0b57569ee4fa9329f670a9
diff --git a/drivers/renesas/common/scif/scif.S b/drivers/renesas/common/scif/scif.S
index beb8dd8..72b5b4b 100644
--- a/drivers/renesas/common/scif/scif.S
+++ b/drivers/renesas/common/scif/scif.S
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2015-2020, Renesas Electronics Corporation. All rights reserved.
+ * Copyright (c) 2015-2021, Renesas Electronics Corporation. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -79,7 +79,7 @@
SCSMR_STOP_1 + \
SCSMR_CKS_DIV1)
#define SCBRR_115200BPS (17)
-#define SCBRR_115200BPSON (16)
+#define SCBRR_115200BPS_D3_SSCG (16)
#define SCBRR_115200BPS_E3_SSCG (15)
#define SCBRR_230400BPS (8)
@@ -216,26 +216,38 @@
and w1, w1, #PRR_PRODUCT_MASK
mov w2, #PRR_PRODUCT_D3
cmp w1, w2
- beq 4f
+ beq 5f
and w1, w1, #PRR_PRODUCT_MASK
mov w2, #PRR_PRODUCT_E3
cmp w1, w2
- bne 5f
+ bne 4f
+ /* When SSCG(MD12) on (E3) */
ldr x1, =RST_MODEMR
ldr w1, [x1]
and w1, w1, #MODEMR_MD12
mov w2, #MODEMR_MD12
cmp w1, w2
- bne 5f
+ bne 4f
+ /* When SSCG(MD12) on (E3) */
mov w1, #SCBRR_115200BPS_E3_SSCG
b 2f
5:
- mov w1, #SCBRR_115200BPS
+ /* In case of D3 */
+ ldr x1, =RST_MODEMR
+ ldr w1, [x1]
+ and w1, w1, #MODEMR_MD12
+ mov w2, #MODEMR_MD12
+ cmp w1, w2
+ bne 4f
+
+ /* When SSCG(MD12) on (D3) */
+ mov w1, #SCBRR_115200BPS_D3_SSCG
b 2f
4:
- mov w1, #SCBRR_115200BPSON
+ /* In case of H3/M3/M3N or when SSCG(MD12) is off in E3/D3 */
+ mov w1, #SCBRR_115200BPS
b 2f
3:
mov w1, #SCBRR_230400BPS
diff --git a/plat/renesas/rcar/bl2_plat_setup.c b/plat/renesas/rcar/bl2_plat_setup.c
index 3bd20e2..e07b96f 100644
--- a/plat/renesas/rcar/bl2_plat_setup.c
+++ b/plat/renesas/rcar/bl2_plat_setup.c
@@ -916,7 +916,7 @@
NOTICE("BL2: PRR is R-Car %s Ver.%d.%d\n", str, major, minor);
}
- if (product == PRR_PRODUCT_E3) {
+ if (PRR_PRODUCT_E3 == product || PRR_PRODUCT_D3 == product) {
reg = mmio_read_32(RCAR_MODEMR);
sscg = reg & RCAR_SSCG_MASK;
str = sscg == RCAR_SSCG_ENABLE ? sscg_on : sscg_off;