mirror of
git://git.openwrt.org/openwrt/openwrt.git
synced 2025-10-30 05:24:26 -04:00
95 lines
2.7 KiB
Diff
95 lines
2.7 KiB
Diff
From bbbbf16c44f34a2d563fa7d71de64ffe3b4b82dc Mon Sep 17 00:00:00 2001
|
|
From: Claudiu Beznea <claudiu.beznea@microchip.com>
|
|
Date: Thu, 15 Apr 2021 13:50:04 +0300
|
|
Subject: [PATCH 213/247] ARM: at91: pm: add sama7g5 ddr phy controller
|
|
|
|
SAMA7G5 self-refresh procedure accesses also the DDR PHY registers.
|
|
Adapt the code so that the at91_dt_ramc() to look also for DDR PHYs,
|
|
in case it is mandatory.
|
|
|
|
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
|
|
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
|
|
Link: https://lore.kernel.org/r/20210415105010.569620-19-claudiu.beznea@microchip.com
|
|
---
|
|
arch/arm/mach-at91/pm.c | 27 +++++++++++++++++++++------
|
|
1 file changed, 21 insertions(+), 6 deletions(-)
|
|
|
|
--- a/arch/arm/mach-at91/pm.c
|
|
+++ b/arch/arm/mach-at91/pm.c
|
|
@@ -552,7 +552,12 @@ static const struct of_device_id ramc_id
|
|
{ /*sentinel*/ }
|
|
};
|
|
|
|
-static __init int at91_dt_ramc(void)
|
|
+static const struct of_device_id ramc_phy_ids[] __initconst = {
|
|
+ { .compatible = "microchip,sama7g5-ddr3phy", },
|
|
+ { /* Sentinel. */ },
|
|
+};
|
|
+
|
|
+static __init void at91_dt_ramc(bool phy_mandatory)
|
|
{
|
|
struct device_node *np;
|
|
const struct of_device_id *of_id;
|
|
@@ -585,6 +590,16 @@ static __init int at91_dt_ramc(void)
|
|
goto unmap_ramc;
|
|
}
|
|
|
|
+ /* Lookup for DDR PHY node, if any. */
|
|
+ for_each_matching_node_and_match(np, ramc_phy_ids, &of_id) {
|
|
+ soc_pm.data.ramc_phy = of_iomap(np, 0);
|
|
+ if (!soc_pm.data.ramc_phy)
|
|
+ panic(pr_fmt("unable to map ramc phy cpu registers\n"));
|
|
+ }
|
|
+
|
|
+ if (phy_mandatory && !soc_pm.data.ramc_phy)
|
|
+ panic(pr_fmt("DDR PHY is mandatory!\n"));
|
|
+
|
|
if (!standby) {
|
|
pr_warn("ramc no standby function available\n");
|
|
return 0;
|
|
@@ -953,7 +968,7 @@ void __init at91rm9200_pm_init(void)
|
|
soc_pm.data.standby_mode = AT91_PM_STANDBY;
|
|
soc_pm.data.suspend_mode = AT91_PM_ULP0;
|
|
|
|
- ret = at91_dt_ramc();
|
|
+ ret = at91_dt_ramc(false);
|
|
if (ret)
|
|
return;
|
|
|
|
@@ -980,7 +995,7 @@ void __init sam9x60_pm_init(void)
|
|
|
|
at91_pm_modes_validate(modes, ARRAY_SIZE(modes));
|
|
at91_pm_modes_init(iomaps, ARRAY_SIZE(iomaps));
|
|
- ret = at91_dt_ramc();
|
|
+ ret = at91_dt_ramc(false);
|
|
if (ret)
|
|
return;
|
|
|
|
@@ -1005,7 +1020,7 @@ void __init at91sam9_pm_init(void)
|
|
soc_pm.data.standby_mode = AT91_PM_STANDBY;
|
|
soc_pm.data.suspend_mode = AT91_PM_ULP0;
|
|
|
|
- ret = at91_dt_ramc();
|
|
+ ret = at91_dt_ramc(false);
|
|
if (ret)
|
|
return;
|
|
|
|
@@ -1023,7 +1038,7 @@ void __init sama5_pm_init(void)
|
|
return;
|
|
|
|
at91_pm_modes_validate(modes, ARRAY_SIZE(modes));
|
|
- ret = at91_dt_ramc();
|
|
+ ret = at91_dt_ramc(false);
|
|
if (ret)
|
|
return;
|
|
|
|
@@ -1048,7 +1063,7 @@ void __init sama5d2_pm_init(void)
|
|
|
|
at91_pm_modes_validate(modes, ARRAY_SIZE(modes));
|
|
at91_pm_modes_init(iomaps, ARRAY_SIZE(iomaps));
|
|
- ret = at91_dt_ramc();
|
|
+ ret = at91_dt_ramc(false);
|
|
if (ret)
|
|
return;
|
|
|