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- From 36e97c421dd9f866e31fe14bcb7af01334791890 Mon Sep 17 00:00:00 2001
- From: Claudiu Beznea <[email protected]>
- Date: Thu, 19 Nov 2020 17:43:17 +0200
- Subject: [PATCH 111/247] clk: at91: sama7g5: register cpu clock
- Register CPU clock as being the master clock prescaler. This would
- be used by DVFS. The block schema of SAMA7G5's PMC contains also a divider
- between master clock prescaler and CPU (PMC_CPU_RATIO.RATIO) but the
- frequencies supported by SAMA7G5 could be directly received from
- CPUPLL + master clock prescaler and the extra divider would do no work in
- case it would be enabled.
- Signed-off-by: Claudiu Beznea <[email protected]>
- Link: https://lore.kernel.org/r/[email protected]
- Signed-off-by: Stephen Boyd <[email protected]>
- ---
- drivers/clk/at91/sama7g5.c | 13 ++++++-------
- include/dt-bindings/clock/at91.h | 1 +
- 2 files changed, 7 insertions(+), 7 deletions(-)
- --- a/drivers/clk/at91/sama7g5.c
- +++ b/drivers/clk/at91/sama7g5.c
- @@ -904,7 +904,7 @@ static void __init sama7g5_pmc_setup(str
- if (IS_ERR(regmap))
- return;
-
- - sama7g5_pmc = pmc_data_allocate(PMC_ETHPLL + 1,
- + sama7g5_pmc = pmc_data_allocate(PMC_CPU + 1,
- nck(sama7g5_systemck),
- nck(sama7g5_periphck),
- nck(sama7g5_gck), 8);
- @@ -981,18 +981,17 @@ static void __init sama7g5_pmc_setup(str
- }
- }
-
- - parent_names[0] = md_slck_name;
- - parent_names[1] = "mainck";
- - parent_names[2] = "cpupll_divpmcck";
- - parent_names[3] = "syspll_divpmcck";
- - hw = at91_clk_register_master_pres(regmap, "mck0_pres", 4, parent_names,
- + parent_names[0] = "cpupll_divpmcck";
- + hw = at91_clk_register_master_pres(regmap, "cpuck", 1, parent_names,
- &mck0_layout, &mck0_characteristics,
- &pmc_mck0_lock,
- CLK_SET_RATE_PARENT, 0);
- if (IS_ERR(hw))
- goto err_free;
-
- - hw = at91_clk_register_master_div(regmap, "mck0_div", "mck0_pres",
- + sama7g5_pmc->chws[PMC_CPU] = hw;
- +
- + hw = at91_clk_register_master_div(regmap, "mck0", "cpuck",
- &mck0_layout, &mck0_characteristics,
- &pmc_mck0_lock, 0);
- if (IS_ERR(hw))
- --- a/include/dt-bindings/clock/at91.h
- +++ b/include/dt-bindings/clock/at91.h
- @@ -34,6 +34,7 @@
- #define PMC_AUDIOPMCPLL (PMC_MAIN + 6)
- #define PMC_AUDIOIOPLL (PMC_MAIN + 7)
- #define PMC_ETHPLL (PMC_MAIN + 8)
- +#define PMC_CPU (PMC_MAIN + 9)
-
- #ifndef AT91_PMC_MOSCS
- #define AT91_PMC_MOSCS 0 /* MOSCS Flag */
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