Re: [PATCH v3 04/15] ddr: altera: n5x: Add self-refresh support in DDR4

[Chee, Tien Fong]

Hi Chen,

On Thu,  8 Oct 2026 09:35:21 +0800, Chen Huei Lok 
<chen.huei....@altera.com> wrote:

diff --git a/drivers/ddr/altera/sdram_n5x.c b/drivers/ddr/altera/sdram_n5x.c
@@ -952,2 +1601,5 @@ static int init_phy(struct ddr_handoff *ddr_handoff_info)
                        ddr_handoff_info->phy_base);
 
+	if (is_ddr_calibration_skipped(reg)) {
+               if (is_cal_bak_data_valid())
+                       *need_calibrate = false;

QSPI-sourced calibration restore: trust boundary with fail-closed checks

Please document trust model (sysmgr retention bit + flash integrity) in 
cover or binding; keep fail-closed

[...]

Best regards,
Tien Fong