diff mbox series

[04/23] imx: imx8ulp: Set XRDC MRC4/5 for access DDR from APD

Message ID 1675154554-88217-5-git-send-email-ye.li@nxp.com
State Accepted
Commit 237ce9b6c4889ce6a493244d71c71fd99d38d034
Delegated to: Stefano Babic
Headers show
Series Add i.MX8ULP A1 revision support | expand

Commit Message

Ye Li Jan. 31, 2023, 8:42 a.m. UTC 
iMX8ULP A1 S400 ROM removes the setting for MRC4/5. So we have to set
them in SPL to allow access to DDR from A35 and APD PER masters

Signed-off-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
---
 arch/arm/mach-imx/imx8ulp/rdc.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

Comments

Stefano Babic March 29, 2023, 8:16 p.m. UTC | #1 
> iMX8ULP A1 S400 ROM removes the setting for MRC4/5. So we have to set
> them in SPL to allow access to DDR from A35 and APD PER masters
> Signed-off-by: Ye Li <ye.li@nxp.com>
> Reviewed-by: Peng Fan <peng.fan@nxp.com>
Applied to u-boot-imx, -next, thanks !

Best regards,
Stefano Babic
diff mbox series

Patch

diff --git a/arch/arm/mach-imx/imx8ulp/rdc.c b/arch/arm/mach-imx/imx8ulp/rdc.c
index 6d2adcf..d664437 100644
--- a/arch/arm/mach-imx/imx8ulp/rdc.c
+++ b/arch/arm/mach-imx/imx8ulp/rdc.c
@@ -276,6 +276,16 @@  void xrdc_init_mda(void)
 
 void xrdc_init_mrc(void)
 {
+	/* Set MRC4 and MRC5 for DDR access from A35 and AP NIC PER masters */
+	xrdc_config_mrc_w0_w1(4, 0, CFG_SYS_SDRAM_BASE, PHYS_SDRAM_SIZE);
+	xrdc_config_mrc_dx_perm(4, 0, 1, 1);
+	xrdc_config_mrc_dx_perm(4, 0, 7, 1);
+	xrdc_config_mrc_w3_w4(4, 0, 0x0, 0x80000FFF);
+
+	xrdc_config_mrc_w0_w1(5, 0, CFG_SYS_SDRAM_BASE, PHYS_SDRAM_SIZE);
+	xrdc_config_mrc_dx_perm(5, 0, 1, 1);
+	xrdc_config_mrc_w3_w4(5, 0, 0x0, 0x80000FFF);
+
 	/* The MRC8 is for SRAM1 */
 	xrdc_config_mrc_w0_w1(8, 0, 0x21000000, 0x10000);
 	/* Allow for all domains: So domain 2/3 (HIFI DSP/LPAV) is ok to access */