From 9368bdfebde16368cdb642adbb12f9c871c94d63 Mon Sep 17 00:00:00 2001 From: Patrick Delaunay Date: Fri, 6 Mar 2020 11:14:11 +0100 Subject: ram: stm32mp1: the property st, phy-cal becomes optional This parameter "st,phy-cal" becomes optional and when it is absent the built-in PHY calibration is done. It is the case in the helper dtsi file "stm32mp15-ddr.dtsi" except if DDR_PHY_CAL_SKIP is defined. This patch also impact the ddr interactive mode - the registers of the param 'phy.cal' are initialized to 0 when "st,phy-cal" is not present in device tree (default behavior when DDR_PHY_CAL_SKIP is not activated) - the info 'cal' field can be use to change the calibration behavior - cal=1 => use param phy.cal to initialize the PHY, built-in training is skipped - cal=0 => param phy.cal is absent, built-in training is used (default) Signed-off-by: Patrick Delaunay Acked-by: Patrice Chotard --- drivers/ram/stm32mp1/stm32mp1_ddr.h | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/ram/stm32mp1/stm32mp1_ddr.h') diff --git a/drivers/ram/stm32mp1/stm32mp1_ddr.h b/drivers/ram/stm32mp1/stm32mp1_ddr.h index 52b748f3ca..4998f04439 100644 --- a/drivers/ram/stm32mp1/stm32mp1_ddr.h +++ b/drivers/ram/stm32mp1/stm32mp1_ddr.h @@ -170,6 +170,7 @@ struct stm32mp1_ddr_config { struct stm32mp1_ddrphy_reg p_reg; struct stm32mp1_ddrphy_timing p_timing; struct stm32mp1_ddrphy_cal p_cal; + bool p_cal_present; }; int stm32mp1_ddr_clk_enable(struct ddr_info *priv, u32 mem_speed); -- cgit