From 263eaf8f172d9f44e15d6aca85fe40ec18d2c477 Mon Sep 17 00:00:00 2001 From: Eugen Hristev Date: Mon, 9 Sep 2019 15:30:31 +0000 Subject: clk: at91: fix update bit maps on CFG_MOR write The regmap update bits call was not selecting the proper mask, considering the bits which was updating. Update the mask from call to also include OSCBYPASS. Removed MOSCEN which was not updated. Fixes: 1bdf02326b71 ("clk: at91: make use of syscon/regmap internally") Signed-off-by: Eugen Hristev Link: https://lkml.kernel.org/r/1568042692-11784-1-git-send-email-eugen.hristev@microchip.com Acked-by: Alexandre Belloni Reviewed-by: Claudiu Beznea Signed-off-by: Stephen Boyd --- drivers/clk/at91/clk-main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/clk/at91') diff --git a/drivers/clk/at91/clk-main.c b/drivers/clk/at91/clk-main.c index f607ee702c83..ebe9b9998b40 100644 --- a/drivers/clk/at91/clk-main.c +++ b/drivers/clk/at91/clk-main.c @@ -152,7 +152,7 @@ at91_clk_register_main_osc(struct regmap *regmap, if (bypass) regmap_update_bits(regmap, AT91_CKGR_MOR, MOR_KEY_MASK | - AT91_PMC_MOSCEN, + AT91_PMC_OSCBYPASS, AT91_PMC_OSCBYPASS | AT91_PMC_KEY); hw = &osc->hw; -- cgit v1.2.3-59-g8ed1b From 69a6bcde7fd3fe6f3268ce26f31d9d9378384c98 Mon Sep 17 00:00:00 2001 From: Eugen Hristev Date: Mon, 9 Sep 2019 15:30:34 +0000 Subject: clk: at91: select parent if main oscillator or bypass is enabled Selecting the right parent for the main clock is done using only main oscillator enabled bit. In case we have this oscillator bypassed by an external signal (no driving on the XOUT line), we still use external clock, but with BYPASS bit set. So, in this case we must select the same parent as before. Create a macro that will select the right parent considering both bits from the MOR register. Use this macro when looking for the right parent. Signed-off-by: Eugen Hristev Link: https://lkml.kernel.org/r/1568042692-11784-2-git-send-email-eugen.hristev@microchip.com Acked-by: Alexandre Belloni Reviewed-by: Claudiu Beznea Signed-off-by: Stephen Boyd --- drivers/clk/at91/clk-main.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'drivers/clk/at91') diff --git a/drivers/clk/at91/clk-main.c b/drivers/clk/at91/clk-main.c index ebe9b9998b40..87083b3a2769 100644 --- a/drivers/clk/at91/clk-main.c +++ b/drivers/clk/at91/clk-main.c @@ -21,6 +21,10 @@ #define MOR_KEY_MASK (0xff << 16) +#define clk_main_parent_select(s) (((s) & \ + (AT91_PMC_MOSCEN | \ + AT91_PMC_OSCBYPASS)) ? 1 : 0) + struct clk_main_osc { struct clk_hw hw; struct regmap *regmap; @@ -113,7 +117,7 @@ static int clk_main_osc_is_prepared(struct clk_hw *hw) regmap_read(regmap, AT91_PMC_SR, &status); - return (status & AT91_PMC_MOSCS) && (tmp & AT91_PMC_MOSCEN); + return (status & AT91_PMC_MOSCS) && clk_main_parent_select(tmp); } static const struct clk_ops main_osc_ops = { @@ -450,7 +454,7 @@ static u8 clk_sam9x5_main_get_parent(struct clk_hw *hw) regmap_read(clkmain->regmap, AT91_CKGR_MOR, &status); - return status & AT91_PMC_MOSCEN ? 1 : 0; + return clk_main_parent_select(status); } static const struct clk_ops sam9x5_main_ops = { @@ -492,7 +496,7 @@ at91_clk_register_sam9x5_main(struct regmap *regmap, clkmain->hw.init = &init; clkmain->regmap = regmap; regmap_read(clkmain->regmap, AT91_CKGR_MOR, &status); - clkmain->parent = status & AT91_PMC_MOSCEN ? 1 : 0; + clkmain->parent = clk_main_parent_select(status); hw = &clkmain->hw; ret = clk_hw_register(NULL, &clkmain->hw); -- cgit v1.2.3-59-g8ed1b From 81a6b601f9f49be4e5972c351ad27cb13265c225 Mon Sep 17 00:00:00 2001 From: Eugen Hristev Date: Wed, 11 Sep 2019 06:39:20 +0000 Subject: clk: at91: allow 24 Mhz clock as input for PLL The PLL input range needs to be able to allow 24 Mhz crystal as input Update the range accordingly in plla characteristics struct Signed-off-by: Eugen Hristev Link: https://lkml.kernel.org/r/1568183622-7858-1-git-send-email-eugen.hristev@microchip.com Acked-by: Nicolas Ferre Fixes: c561e41ce4d2 ("clk: at91: add sama5d2 PMC driver") Signed-off-by: Stephen Boyd --- drivers/clk/at91/sama5d2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/clk/at91') diff --git a/drivers/clk/at91/sama5d2.c b/drivers/clk/at91/sama5d2.c index 6509d0934804..0de1108737db 100644 --- a/drivers/clk/at91/sama5d2.c +++ b/drivers/clk/at91/sama5d2.c @@ -21,7 +21,7 @@ static const struct clk_range plla_outputs[] = { }; static const struct clk_pll_characteristics plla_characteristics = { - .input = { .min = 12000000, .max = 12000000 }, + .input = { .min = 12000000, .max = 24000000 }, .num_output = ARRAY_SIZE(plla_outputs), .output = plla_outputs, .icpll = plla_icpll, -- cgit v1.2.3-59-g8ed1b