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| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2024-02-20 10:30:54 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2024-02-23 08:30:31 +0100 |
| commit | 824801f1309e4b134e4a249bef7376cba93ddee3 (patch) | |
| tree | 758afa667e117c9322e9499dd344b21266c3a759 /arch | |
| parent | ead3bd2c6db6549f4ab5c16286260d9c50647932 (diff) | |
| download | barebox-824801f1309e4b134e4a249bef7376cba93ddee3.tar.gz barebox-824801f1309e4b134e4a249bef7376cba93ddee3.tar.xz | |
ARM: at91: sam9263_ll: refactor MCK switch to PLLA for clarity
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().
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20240220093100.1539120-9-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-at91/sam9263_ll.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/arch/arm/mach-at91/sam9263_ll.c b/arch/arm/mach-at91/sam9263_ll.c index ed56ad21cd..dd4ea7c938 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) |