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atf: revert ddr controller options to lsdk-21.08 values #108

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atf: revert ddr controller options to lsdk-21.08 values #108

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73 changes: 73 additions & 0 deletions patches/atf/0023-lx2160acex7-revert-ddr-configuration-to-lsdk-21.08-v.patch
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Original file line number Diff line number Diff line change
@@ -0,0 +1,73 @@
From 95af152b1fc5ad7de477231447a3adb69c775af1 Mon Sep 17 00:00:00 2001
From: Josua Mayer <josua@solid-run.com>
Date: Sun, 1 Feb 2026 14:00:48 +0200
Subject: [PATCH] lx2160acex7: revert ddr configuration to lsdk-21.08 values

Revert the DDR controller configuration options to the defaults used in
LSDK-21.08 BSP.

Signed-off-by: Josua Mayer <josua@solid-run.com>
---
plat/nxp/soc-lx2160a/lx2160acex7/ddr_init.c | 42 ++++++---------------
1 file changed, 12 insertions(+), 30 deletions(-)

diff --git a/plat/nxp/soc-lx2160a/lx2160acex7/ddr_init.c b/plat/nxp/soc-lx2160a/lx2160acex7/ddr_init.c
index 2bd014a7e..0e9146b29 100644
--- a/plat/nxp/soc-lx2160a/lx2160acex7/ddr_init.c
+++ b/plat/nxp/soc-lx2160a/lx2160acex7/ddr_init.c
@@ -28,40 +28,22 @@
int ddr_board_options(struct ddr_info *priv)
{
struct memctl_opt *popts = &priv->opt;
- const struct ddr_conf *conf = &priv->conf;

+ popts->auto_self_refresh_en = 1;
+ popts->phy_atx_impedance = 30;
popts->vref_dimm = U(0x24); /* range 1, 83.4% */
- popts->rtt_override = 0;
popts->rtt_park = U(240);
- popts->otf_burst_chop_en = 0;
- popts->burst_length = U(DDR_BL8);
- popts->trwt_override = U(1);
- popts->bstopre = U(0); /* auto precharge */
+ popts->burst_length = DDR_BL8;
+ popts->trwt_override = 1;
+ popts->bstopre = 0; /* auto precharge */
popts->addr_hash = 1;
-
- /* Set ODT impedance on PHY side */
- switch (conf->cs_on_dimm[1]) {
- case 0xc: /* Two slots dual rank */
- case 0x4: /* Two slots single rank, not valid for interleaving */
- popts->trwt = U(0xf);
- popts->twrt = U(0x7);
- popts->trrt = U(0x7);
- popts->twwt = U(0x7);
- popts->vref_phy = U(0x6B); /* 83.6% */
- popts->odt = U(60);
- popts->phy_tx_impedance = U(28);
- break;
- case 0: /* One slot used */
- default:
- popts->trwt = U(0x3);
- popts->twrt = U(0x3);
- popts->trrt = U(0x3);
- popts->twwt = U(0x3);
- popts->vref_phy = U(0x60); /* 75% */
- popts->odt = U(48);
- popts->phy_tx_impedance = U(28);
- break;
- }
+ popts->trwt = 0x3;
+ popts->twrt = 0x3;
+ popts->trrt = 0x3;
+ popts->twwt = 0x3;
+ popts->vref_phy = 0x60; /* 75% */
+ popts->odt = U(48);
+ popts->phy_tx_impedance = U(48);

return 0;
}
--
2.43.0