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From: <nicolas.ferre@microchip.com>
To: Alexandre Belloni <alexandre.belloni@bootlin.com>,
	Claudiu Beznea <claudiu.beznea@tuxon.dev>
Cc: <linux-kernel@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	Cristian Birsan <cristian.birsan@microchip.com>,
	Ryan Wanner <ryan.wanner@microchip.com>,
	Varshini Rajendran <varshini.rajendran@microchip.com>,
	Mihai Sain <mihai.sain@microchip.com>
Subject: [PATCH 1/2] clk: at91: add ACR in all PLL settings
Date: Mon, 15 Sep 2025 16:29:07 +0200	[thread overview]
Message-ID: <20250915142908.18737-1-nicolas.ferre@microchip.com> (raw)

From: Cristian Birsan <cristian.birsan@microchip.com>

Add the ACR register to all PLL settings and provide the correct
ACR value for each PLL used in different SoCs.

Suggested-by: Mihai Sain <mihai.sain@microchip.com>
Signed-off-by: Cristian Birsan <cristian.birsan@microchip.com>
[nicolas.ferre@microchip.com: add sama7d65 and review commit message]
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
---
 drivers/clk/at91/pmc.h      | 1 +
 drivers/clk/at91/sam9x60.c  | 2 ++
 drivers/clk/at91/sam9x7.c   | 5 +++++
 drivers/clk/at91/sama7d65.c | 4 ++++
 drivers/clk/at91/sama7g5.c  | 2 ++
 5 files changed, 14 insertions(+)

diff --git a/drivers/clk/at91/pmc.h b/drivers/clk/at91/pmc.h
index 4fb29ca111f7..5daa32c4cf25 100644
--- a/drivers/clk/at91/pmc.h
+++ b/drivers/clk/at91/pmc.h
@@ -80,6 +80,7 @@ struct clk_pll_characteristics {
 	u16 *icpll;
 	u8 *out;
 	u8 upll : 1;
+	u32 acr;
 };
 
 struct clk_programmable_layout {
diff --git a/drivers/clk/at91/sam9x60.c b/drivers/clk/at91/sam9x60.c
index db6db9e2073e..18baf4a256f4 100644
--- a/drivers/clk/at91/sam9x60.c
+++ b/drivers/clk/at91/sam9x60.c
@@ -36,6 +36,7 @@ static const struct clk_pll_characteristics plla_characteristics = {
 	.num_output = ARRAY_SIZE(plla_outputs),
 	.output = plla_outputs,
 	.core_output = core_outputs,
+	.acr = UL(0x00020010),
 };
 
 static const struct clk_range upll_outputs[] = {
@@ -48,6 +49,7 @@ static const struct clk_pll_characteristics upll_characteristics = {
 	.output = upll_outputs,
 	.core_output = core_outputs,
 	.upll = true,
+	.acr = UL(0x12023010), /* fIN = [18 MHz, 32 MHz]*/
 };
 
 static const struct clk_pll_layout pll_frac_layout = {
diff --git a/drivers/clk/at91/sam9x7.c b/drivers/clk/at91/sam9x7.c
index 740f52906f6b..89868a0aeaba 100644
--- a/drivers/clk/at91/sam9x7.c
+++ b/drivers/clk/at91/sam9x7.c
@@ -107,6 +107,7 @@ static const struct clk_pll_characteristics plla_characteristics = {
 	.num_output = ARRAY_SIZE(plla_outputs),
 	.output = plla_outputs,
 	.core_output = plla_core_outputs,
+	.acr = UL(0x00020010), /* Old ACR_DEFAULT_PLLA value */
 };
 
 static const struct clk_pll_characteristics upll_characteristics = {
@@ -115,6 +116,7 @@ static const struct clk_pll_characteristics upll_characteristics = {
 	.output = upll_outputs,
 	.core_output = upll_core_outputs,
 	.upll = true,
+	.acr = UL(0x12023010), /* fIN=[20 MHz, 32 MHz] */
 };
 
 static const struct clk_pll_characteristics lvdspll_characteristics = {
@@ -122,6 +124,7 @@ static const struct clk_pll_characteristics lvdspll_characteristics = {
 	.num_output = ARRAY_SIZE(lvdspll_outputs),
 	.output = lvdspll_outputs,
 	.core_output = lvdspll_core_outputs,
+	.acr = UL(0x12023010), /* fIN=[20 MHz, 32 MHz] */
 };
 
 static const struct clk_pll_characteristics audiopll_characteristics = {
@@ -129,6 +132,7 @@ static const struct clk_pll_characteristics audiopll_characteristics = {
 	.num_output = ARRAY_SIZE(audiopll_outputs),
 	.output = audiopll_outputs,
 	.core_output = audiopll_core_outputs,
+	.acr = UL(0x12023010), /* fIN=[20 MHz, 32 MHz] */
 };
 
 static const struct clk_pll_characteristics plladiv2_characteristics = {
@@ -136,6 +140,7 @@ static const struct clk_pll_characteristics plladiv2_characteristics = {
 	.num_output = ARRAY_SIZE(plladiv2_outputs),
 	.output = plladiv2_outputs,
 	.core_output = plladiv2_core_outputs,
+	.acr = UL(0x00020010),  /* Old ACR_DEFAULT_PLLA value */
 };
 
 /* Layout for fractional PLL ID PLLA. */
diff --git a/drivers/clk/at91/sama7d65.c b/drivers/clk/at91/sama7d65.c
index a5d40df8b2f2..7dee2b160ffb 100644
--- a/drivers/clk/at91/sama7d65.c
+++ b/drivers/clk/at91/sama7d65.c
@@ -138,6 +138,7 @@ static const struct clk_pll_characteristics cpu_pll_characteristics = {
 	.num_output = ARRAY_SIZE(cpu_pll_outputs),
 	.output = cpu_pll_outputs,
 	.core_output = core_outputs,
+	.acr = UL(0x00070010),
 };
 
 /* PLL characteristics. */
@@ -146,6 +147,7 @@ static const struct clk_pll_characteristics pll_characteristics = {
 	.num_output = ARRAY_SIZE(pll_outputs),
 	.output = pll_outputs,
 	.core_output = core_outputs,
+	.acr = UL(0x00070010),
 };
 
 static const struct clk_pll_characteristics lvdspll_characteristics = {
@@ -153,6 +155,7 @@ static const struct clk_pll_characteristics lvdspll_characteristics = {
 	.num_output = ARRAY_SIZE(lvdspll_outputs),
 	.output = lvdspll_outputs,
 	.core_output = lvdspll_core_outputs,
+	.acr = UL(0x00070010),
 };
 
 static const struct clk_pll_characteristics upll_characteristics = {
@@ -160,6 +163,7 @@ static const struct clk_pll_characteristics upll_characteristics = {
 	.num_output = ARRAY_SIZE(upll_outputs),
 	.output = upll_outputs,
 	.core_output = upll_core_outputs,
+	.acr = UL(0x12020010),
 	.upll = true,
 };
 
diff --git a/drivers/clk/at91/sama7g5.c b/drivers/clk/at91/sama7g5.c
index 8385badc1c70..1340c2b00619 100644
--- a/drivers/clk/at91/sama7g5.c
+++ b/drivers/clk/at91/sama7g5.c
@@ -113,6 +113,7 @@ static const struct clk_pll_characteristics cpu_pll_characteristics = {
 	.num_output = ARRAY_SIZE(cpu_pll_outputs),
 	.output = cpu_pll_outputs,
 	.core_output = core_outputs,
+	.acr = UL(0x00070010),
 };
 
 /* PLL characteristics. */
@@ -121,6 +122,7 @@ static const struct clk_pll_characteristics pll_characteristics = {
 	.num_output = ARRAY_SIZE(pll_outputs),
 	.output = pll_outputs,
 	.core_output = core_outputs,
+	.acr = UL(0x00070010),
 };
 
 /*
-- 
2.43.0


                 reply	other threads:[~2025-09-15 14:29 UTC|newest]

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