mail archive of the barebox mailing list
 help / color / mirror / Atom feed
From: Ahmad Fatoum <a.fatoum@pengutronix.de>
To: barebox@lists.infradead.org
Cc: Sam Ravnborg <sam@ravnborg.org>, Ahmad Fatoum <a.fatoum@pengutronix.de>
Subject: [PATCH v3 08/15] ARM: at91: sam9263_ll: refactor MCK switch to PLLA for clarity
Date: Thu, 15 Feb 2024 17:30:02 +0100	[thread overview]
Message-ID: <20240215163009.2172795-9-a.fatoum@pengutronix.de> (raw)
In-Reply-To: <20240215163009.2172795-1-a.fatoum@pengutronix.de>

Duplicating the bits being written to configure the MCK harms
readability, so factor that out into a new variable to make clear the
bits that change between the two calls to at91_pmc_cfg_mck().

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
v3:
  - new patch
---
 arch/arm/mach-at91/sam9263_ll.c | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/arch/arm/mach-at91/sam9263_ll.c b/arch/arm/mach-at91/sam9263_ll.c
index ed56ad21cd89..dd4ea7c938f7 100644
--- a/arch/arm/mach-at91/sam9263_ll.c
+++ b/arch/arm/mach-at91/sam9263_ll.c
@@ -10,6 +10,7 @@
 static void sam9263_pmc_init(const struct sam92_pmc_config *config)
 {
 	unsigned flags = AT91_PMC_LL_AT91SAM9263;
+	u32 mckr_settings;
 
 	at91_pmc_init(IOMEM(AT91SAM926X_BASE_PMC), flags);
 
@@ -21,22 +22,15 @@ static void sam9263_pmc_init(const struct sam92_pmc_config *config)
 			  flags);
 
 	/* Selection of Master Clock and Processor Clock */
+	mckr_settings = AT91_PMC_PRES_1 | AT91SAM9_PMC_MDIV_2 | AT91_PMC_PDIV_1;
 
 	/* PCK = PLLA = 2 * MCK */
 	at91_pmc_cfg_mck(IOMEM(AT91SAM926X_BASE_PMC),
-			 AT91_PMC_CSS_SLOW
-			 | AT91_PMC_PRES_1
-			 | AT91SAM9_PMC_MDIV_2
-			 | AT91_PMC_PDIV_1,
-			 flags);
+			 AT91_PMC_CSS_SLOW | mckr_settings, flags);
 
 	/* Switch MCK on PLLA output */
 	at91_pmc_cfg_mck(IOMEM(AT91SAM926X_BASE_PMC),
-			 AT91_PMC_CSS_PLLA
-			 | AT91_PMC_PRES_1
-			 | AT91SAM9_PMC_MDIV_2
-			 | AT91_PMC_PDIV_1,
-			 flags);
+			 AT91_PMC_CSS_PLLA | mckr_settings, flags);
 }
 
 static inline void matrix_wr(unsigned int offset, const unsigned int value)
-- 
2.39.2




  parent reply	other threads:[~2024-02-15 16:31 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-02-15 16:29 [PATCH v3 00/15] ARM: at91: skov-arm9cpu (SAM9263) first stage support Ahmad Fatoum
2024-02-15 16:29 ` [PATCH v3 01/15] mci: atmel_mci: disable power save mode Ahmad Fatoum
2024-02-15 16:29 ` [PATCH v3 02/15] mci: atmel_mci: fix zeroing of block length on AT91SAM9263 Ahmad Fatoum
2024-02-15 16:29 ` [PATCH v3 03/15] ARM: replace ENTRY_FUNCTION_HEAD with ENTRY_FUNCTION_WITHSTACK_HEAD Ahmad Fatoum
2024-02-15 16:29 ` [PATCH v3 04/15] ARM: at91: use AT91 header instead of generic barebox ARM's Ahmad Fatoum
2024-02-15 16:29 ` [PATCH v3 05/15] ARM: at91: implement SAM9_ENTRY_FUNCTION Ahmad Fatoum
2024-02-15 16:30 ` [PATCH v3 06/15] ARM: at91: sam9263_ll: drop PLL charge pump initialization Ahmad Fatoum
2024-02-15 16:30 ` [PATCH v3 07/15] ARM: at91: sam9263_ll: pass AT91_PMC_LL_AT91SAM9263 to PMC functions Ahmad Fatoum
2024-02-15 16:30 ` Ahmad Fatoum [this message]
2024-02-15 16:30 ` [PATCH v3 09/15] ARM: at91: sam9263_ll: support configuration of PLLB Ahmad Fatoum
2024-02-15 16:30 ` [PATCH v3 10/15] ARM: dts: AT91: skov-arm9cpu: remove barebox environment on NOR Ahmad Fatoum
2024-02-15 16:30 ` [PATCH v3 11/15] ARM: at91: skov-arm9cpu: Add SD-Card xload support Ahmad Fatoum
2024-02-15 22:29   ` Sam Ravnborg
2024-02-20  9:25     ` Ahmad Fatoum
2024-02-21 16:28       ` Sam Ravnborg
2024-02-15 16:30 ` [PATCH v3 12/15] ARM: at91: skov-arm9cpu: configure SMC for NOR flash use Ahmad Fatoum
2024-02-15 16:30 ` [PATCH v3 13/15] ARM: at91: skov-arm9cpu: configure more appropriate hostname Ahmad Fatoum
2024-02-15 16:30 ` [PATCH v3 14/15] ARM: AT91: skov-arm9cpu: support environment on SD-Card Ahmad Fatoum
2024-02-15 16:30 ` [PATCH v3 15/15] usb: ohci-at91: fix possible hang chainloading barebox Ahmad Fatoum
2024-02-16 13:15   ` Sascha Hauer
2024-02-20  9:26     ` Ahmad Fatoum
2024-02-15 22:33 ` [PATCH v3 00/15] ARM: at91: skov-arm9cpu (SAM9263) first stage support Sam Ravnborg
2024-02-20  9:27   ` Ahmad Fatoum

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20240215163009.2172795-9-a.fatoum@pengutronix.de \
    --to=a.fatoum@pengutronix.de \
    --cc=barebox@lists.infradead.org \
    --cc=sam@ravnborg.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox