openwrtv3/package/boot/uboot-layerscape/patches/0067-armv8-ls1012a-DDR-optmizations.patch

From 8b6c309e5e55670f429730449d9921987636c8ec Mon Sep 17 00:00:00 2001
From: Calvin Johnson <calvin.johnson@freescale.com>
Date: Wed, 8 Jun 2016 17:04:58 +0530
Subject: [PATCH 67/93] armv8: ls1012a: DDR optmizations

Enable DDR row-bank-column decoding. DDR address will
be decoded as row-bank-column instead of bank-row-column.
This will improve performance of serial data transfers.

Refresh cycle value must be selected based on the frequency
of DDR. tREFI = 7.8 us as per JEDEC. The value for MDREF[REF_CNT]
should be based on round up (tREFI/tCK) formula. For 500MHz, mdref
value should be 0x0f3c8000.

Signed-off-by: Calvin Johnson <calvin.johnson@nxp.com>
---
 board/freescale/ls1012afrdm/ls1012afrdm.c |    4 ++--
 board/freescale/ls1012aqds/ls1012aqds.c   |    4 ++--
 board/freescale/ls1012ardb/ls1012ardb.c   |    4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/board/freescale/ls1012afrdm/ls1012afrdm.c b/board/freescale/ls1012afrdm/ls1012afrdm.c
index c691a76..4b7902a 100644
--- a/board/freescale/ls1012afrdm/ls1012afrdm.c
+++ b/board/freescale/ls1012afrdm/ls1012afrdm.c
@@ -59,7 +59,7 @@ void mmdc_init(void)
 	out_be32(&mmdc->mdcfg2, 0x01ff00db);
 
 	/* other parms	*/
-	out_be32(&mmdc->mdmisc,    0x00000680);
+	out_be32(&mmdc->mdmisc,    0x00001680);
 	out_be32(&mmdc->mpmur0,    0x00000800);
 	out_be32(&mmdc->mdrwd,     0x00002000);
 	out_be32(&mmdc->mpodtctrl, 0x0000022a);
@@ -118,7 +118,7 @@ void mmdc_init(void)
 	out_be32(&mmdc->mapsr, 0x00001067);
 
 	/* refresh scheme */
-	set_wait_for_bits_clear(&mmdc->mdref, 0x103e8000, 0x00000001);
+	set_wait_for_bits_clear(&mmdc->mdref, 0x0f3c8000, 0x00000001);
 
 	/* disable CON_REQ */
 	out_be32(&mmdc->mdscr, 0x0);
diff --git a/board/freescale/ls1012aqds/ls1012aqds.c b/board/freescale/ls1012aqds/ls1012aqds.c
index 516f0c3..4ae8def 100644
--- a/board/freescale/ls1012aqds/ls1012aqds.c
+++ b/board/freescale/ls1012aqds/ls1012aqds.c
@@ -82,7 +82,7 @@ void mmdc_init(void)
 	out_be32(&mmdc->mdcfg2, 0x01ff00db);
 
 	/* other parms	*/
-	out_be32(&mmdc->mdmisc,    0x00000680);
+	out_be32(&mmdc->mdmisc,    0x00001680);
 	out_be32(&mmdc->mpmur0,    0x00000800);
 	out_be32(&mmdc->mdrwd,     0x00002000);
 	out_be32(&mmdc->mpodtctrl, 0x0000022a);
@@ -142,7 +142,7 @@ void mmdc_init(void)
 	out_be32(&mmdc->mapsr, 0x00001067);
 
 	/* refresh scheme */
-	set_wait_for_bits_clear(&mmdc->mdref, 0x103e8000, 0x00000001);
+	set_wait_for_bits_clear(&mmdc->mdref, 0x0f3c8000, 0x00000001);
 
 	/* disable CON_REQ */
 	out_be32(&mmdc->mdscr, 0x0);
diff --git a/board/freescale/ls1012ardb/ls1012ardb.c b/board/freescale/ls1012ardb/ls1012ardb.c
index 7f7503c..06e1f6b 100644
--- a/board/freescale/ls1012ardb/ls1012ardb.c
+++ b/board/freescale/ls1012ardb/ls1012ardb.c
@@ -88,7 +88,7 @@ void mmdc_init(void)
 	out_be32(&mmdc->mdcfg2, 0x01ff00db);
 
 	/* other parms	*/
-	out_be32(&mmdc->mdmisc,    0x00000680);
+	out_be32(&mmdc->mdmisc,    0x00001680);
 	out_be32(&mmdc->mpmur0,    0x00000800);
 	out_be32(&mmdc->mdrwd,     0x00002000);
 	out_be32(&mmdc->mpodtctrl, 0x0000022a);
@@ -148,7 +148,7 @@ void mmdc_init(void)
 	out_be32(&mmdc->mapsr, 0x00001067);
 
 	/* refresh scheme */
-	set_wait_for_bits_clear(&mmdc->mdref, 0x103e8000, 0x00000001);
+	set_wait_for_bits_clear(&mmdc->mdref, 0x0f3c8000, 0x00000001);
 
 	/* disable CON_REQ */
 	out_be32(&mmdc->mdscr, 0x0);
-- 
1.7.9.5