linux-kernel - [PATCH v3 17/24] ARM: at91: pm: add sama7g5 ddr controller

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Message-ID: <20210415105010.569620-18-claudiu.beznea@microchip.com>
Date:   Thu, 15 Apr 2021 13:50:03 +0300
From:   Claudiu Beznea <claudiu.beznea@...rochip.com>
To:     <nicolas.ferre@...rochip.com>, <alexandre.belloni@...tlin.com>,
        <ludovic.desroches@...rochip.com>, <robh+dt@...nel.org>,
        <linux@...linux.org.uk>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>
Subject: [PATCH v3 17/24] ARM: at91: pm: add sama7g5 ddr controller

Add SAMA7G5 DDR controller to the list of DDR controller compatibles.
At the moment there is no standby support. Adapt the code for this.

Signed-off-by: Claudiu Beznea <claudiu.beznea@...rochip.com>
---
 arch/arm/mach-at91/pm.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index 65e13769cf50..5dc942a2012d 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -548,6 +548,7 @@ static const struct of_device_id ramc_ids[] __initconst = {
 	{ .compatible = "atmel,at91sam9260-sdramc", .data = &ramc_infos[1] },
 	{ .compatible = "atmel,at91sam9g45-ddramc", .data = &ramc_infos[2] },
 	{ .compatible = "atmel,sama5d3-ddramc", .data = &ramc_infos[3] },
+	{ .compatible = "microchip,sama7g5-uddrc", },
 	{ /*sentinel*/ }
 };
 
@@ -565,9 +566,11 @@ static __init void at91_dt_ramc(void)
 			panic(pr_fmt("unable to map ramc[%d] cpu registers\n"), idx);
 
 		ramc = of_id->data;
-		if (!standby)
-			standby = ramc->idle;
-		soc_pm.data.memctrl = ramc->memctrl;
+		if (ramc) {
+			if (!standby)
+				standby = ramc->idle;
+			soc_pm.data.memctrl = ramc->memctrl;
+		}
 
 		idx++;
 	}
-- 
2.25.1