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Message-ID: <20230623203056.689705-9-varshini.rajendran@microchip.com>
Date: Sat, 24 Jun 2023 02:00:19 +0530
From: Varshini Rajendran <varshini.rajendran@...rochip.com>
To: <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
<conor+dt@...nel.org>, <nicolas.ferre@...rochip.com>,
<alexandre.belloni@...tlin.com>, <claudiu.beznea@...rochip.com>,
<mturquette@...libre.com>, <sboyd@...nel.org>, <herbert@...dor.apana.org.au>,
<davem@...emloft.net>, <vkoul@...nel.org>, <tglx@...utronix.de>,
<maz@...nel.org>, <lee@...nel.org>, <ulf.hansson@...aro.org>,
<tudor.ambarus@...aro.org>, <miquel.raynal@...tlin.com>, <richard@....at>,
<vigneshr@...com>, <edumazet@...gle.com>, <kuba@...nel.org>,
<pabeni@...hat.com>, <linus.walleij@...aro.org>, <p.zabel@...gutronix.de>,
<olivia@...enic.com>, <a.zummo@...ertech.it>, <radu_nicolae.pirea@....ro>,
<richard.genoud@...il.com>, <gregkh@...uxfoundation.org>,
<lgirdwood@...il.com>, <broonie@...nel.org>, <wim@...ux-watchdog.org>,
<linux@...ck-us.net>, <arnd@...db.de>, <olof@...om.net>, <soc@...nel.org>,
<linux@...linux.org.uk>, <sre@...nel.org>, <jerry.ray@...rochip.com>,
<horatiu.vultur@...rochip.com>, <durai.manickamkr@...rochip.com>,
<varshini.rajendran@...rochip.com>, <andrew@...n.ch>,
<alain.volmat@...s.st.com>, <neil.armstrong@...aro.org>,
<mihai.sain@...rochip.com>, <eugen.hristev@...labora.com>,
<devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>, <linux-clk@...r.kernel.org>,
<linux-crypto@...r.kernel.org>, <dmaengine@...r.kernel.org>,
<linux-i2c@...r.kernel.org>, <linux-mmc@...r.kernel.org>,
<linux-mtd@...ts.infradead.org>, <netdev@...r.kernel.org>,
<linux-gpio@...r.kernel.org>, <linux-rtc@...r.kernel.org>,
<linux-spi@...r.kernel.org>, <linux-serial@...r.kernel.org>,
<alsa-devel@...a-project.org>, <linux-usb@...r.kernel.org>,
<linux-watchdog@...r.kernel.org>, <linux-pm@...r.kernel.org>
CC: <Hari.PrasathGE@...rochip.com>, <cristian.birsan@...rochip.com>,
<balamanikandan.gunasundar@...rochip.com>, <manikandan.m@...rochip.com>,
<dharma.b@...rochip.com>, <nayabbasha.sayed@...rochip.com>,
<balakrishnan.s@...rochip.com>
Subject: [PATCH v2 08/45] clk: at91: clk-sam9x60-pll: re-factor to support individual core freq outputs
SAM9X7 SoC family supports different core output frequencies for
different PLL IDs. To handle the same in the PLL driver, a separate
parameter core_output is added. The sam9x60 and sama7g5 SoC PMC drivers
are aligned to the PLL driver by adding the core output freq range in
the PLL characteristics configurations.
Signed-off-by: Varshini Rajendran <varshini.rajendran@...rochip.com>
---
drivers/clk/at91/clk-sam9x60-pll.c | 12 ++++++------
drivers/clk/at91/pmc.h | 1 +
drivers/clk/at91/sam9x60.c | 7 +++++++
drivers/clk/at91/sama7g5.c | 7 +++++++
4 files changed, 21 insertions(+), 6 deletions(-)
diff --git a/drivers/clk/at91/clk-sam9x60-pll.c b/drivers/clk/at91/clk-sam9x60-pll.c
index 0882ed01d5c2..b3012641214c 100644
--- a/drivers/clk/at91/clk-sam9x60-pll.c
+++ b/drivers/clk/at91/clk-sam9x60-pll.c
@@ -23,9 +23,6 @@
#define UPLL_DIV 2
#define PLL_MUL_MAX (FIELD_GET(PMC_PLL_CTRL1_MUL_MSK, UINT_MAX) + 1)
-#define FCORE_MIN (600000000)
-#define FCORE_MAX (1200000000)
-
#define PLL_MAX_ID 7
struct sam9x60_pll_core {
@@ -194,7 +191,8 @@ static long sam9x60_frac_pll_compute_mul_frac(struct sam9x60_pll_core *core,
unsigned long nmul = 0;
unsigned long nfrac = 0;
- if (rate < FCORE_MIN || rate > FCORE_MAX)
+ if (rate < core->characteristics->core_output[0].min ||
+ rate > core->characteristics->core_output[0].max)
return -ERANGE;
/*
@@ -214,7 +212,8 @@ static long sam9x60_frac_pll_compute_mul_frac(struct sam9x60_pll_core *core,
}
/* Check if resulted rate is a valid. */
- if (tmprate < FCORE_MIN || tmprate > FCORE_MAX)
+ if (tmprate < core->characteristics->core_output[0].min ||
+ tmprate > core->characteristics->core_output[0].max)
return -ERANGE;
if (update) {
@@ -666,7 +665,8 @@ sam9x60_clk_register_frac_pll(struct regmap *regmap, spinlock_t *lock,
goto free;
}
- ret = sam9x60_frac_pll_compute_mul_frac(&frac->core, FCORE_MIN,
+ ret = sam9x60_frac_pll_compute_mul_frac(&frac->core,
+ characteristics->core_output[0].min,
parent_rate, true);
if (ret < 0) {
hw = ERR_PTR(ret);
diff --git a/drivers/clk/at91/pmc.h b/drivers/clk/at91/pmc.h
index 1b3ca7dd9b57..3e36dcc464c1 100644
--- a/drivers/clk/at91/pmc.h
+++ b/drivers/clk/at91/pmc.h
@@ -75,6 +75,7 @@ struct clk_pll_characteristics {
struct clk_range input;
int num_output;
const struct clk_range *output;
+ const struct clk_range *core_output;
u16 *icpll;
u8 *out;
u8 upll : 1;
diff --git a/drivers/clk/at91/sam9x60.c b/drivers/clk/at91/sam9x60.c
index ac070db58195..452ad45cf251 100644
--- a/drivers/clk/at91/sam9x60.c
+++ b/drivers/clk/at91/sam9x60.c
@@ -26,10 +26,16 @@ static const struct clk_range plla_outputs[] = {
{ .min = 2343750, .max = 1200000000 },
};
+/* Fractional PLL core output range. */
+static const struct clk_range core_outputs[] = {
+ { .min = 600000000, .max = 1200000000 },
+};
+
static const struct clk_pll_characteristics plla_characteristics = {
.input = { .min = 12000000, .max = 48000000 },
.num_output = ARRAY_SIZE(plla_outputs),
.output = plla_outputs,
+ .core_output = core_outputs,
};
static const struct clk_range upll_outputs[] = {
@@ -40,6 +46,7 @@ static const struct clk_pll_characteristics upll_characteristics = {
.input = { .min = 12000000, .max = 48000000 },
.num_output = ARRAY_SIZE(upll_outputs),
.output = upll_outputs,
+ .core_output = core_outputs,
.upll = true,
};
diff --git a/drivers/clk/at91/sama7g5.c b/drivers/clk/at91/sama7g5.c
index f135b662f1ff..468a3c5449b5 100644
--- a/drivers/clk/at91/sama7g5.c
+++ b/drivers/clk/at91/sama7g5.c
@@ -104,11 +104,17 @@ static const struct clk_range pll_outputs[] = {
{ .min = 2343750, .max = 1200000000 },
};
+/* Fractional PLL core output range. */
+static const struct clk_range core_outputs[] = {
+ { .min = 600000000, .max = 1200000000 },
+};
+
/* CPU PLL characteristics. */
static const struct clk_pll_characteristics cpu_pll_characteristics = {
.input = { .min = 12000000, .max = 50000000 },
.num_output = ARRAY_SIZE(cpu_pll_outputs),
.output = cpu_pll_outputs,
+ .core_output = core_outputs,
};
/* PLL characteristics. */
@@ -116,6 +122,7 @@ static const struct clk_pll_characteristics pll_characteristics = {
.input = { .min = 12000000, .max = 50000000 },
.num_output = ARRAY_SIZE(pll_outputs),
.output = pll_outputs,
+ .core_output = core_outputs,
};
/*
--
2.25.1
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