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Thu, 23 Jul 2020 08:26:58 -0700 (PDT) From: Daniel Lezcano To: tglx@linutronix.de Subject: [PATCH 05/16] clocksource/drivers/timer-atmel-tcb: Rework 32khz clock selection Date: Thu, 23 Jul 2020 17:26:25 +0200 Message-Id: <20200723152639.639771-5-daniel.lezcano@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200723152639.639771-1-daniel.lezcano@linaro.org> References: <1b1122f4-bce9-f349-e602-ed8e14cbb501@linaro.org> <20200723152639.639771-1-daniel.lezcano@linaro.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200723_112701_118142_293DDE9D X-CRM114-Status: GOOD ( 13.89 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alexandre Belloni , Ludovic Desroches , "moderated list:ARM/Microchip AT91 SoC support" , "open list:CLOCKSOURCE, CLOCKEVENT DRIVERS" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Alexandre Belloni On all the supported SoCs, the slow clock is always ATMEL_TC_TIMER_CLOCK5, avoid looking it up and pass it directly to setup_clkevents. Signed-off-by: Alexandre Belloni Signed-off-by: Daniel Lezcano Link: https://lore.kernel.org/r/20200710230813.1005150-6-alexandre.belloni@bootlin.com --- drivers/clocksource/timer-atmel-tcb.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/drivers/clocksource/timer-atmel-tcb.c b/drivers/clocksource/timer-atmel-tcb.c index 7427b07495a8..b255a4a1a36b 100644 --- a/drivers/clocksource/timer-atmel-tcb.c +++ b/drivers/clocksource/timer-atmel-tcb.c @@ -346,7 +346,7 @@ static void __init tcb_setup_single_chan(struct atmel_tc *tc, int mck_divisor_id writel(ATMEL_TC_SYNC, tcaddr + ATMEL_TC_BCR); } -static const u8 atmel_tcb_divisors[5] = { 2, 8, 32, 128, 0, }; +static const u8 atmel_tcb_divisors[] = { 2, 8, 32, 128 }; static const struct of_device_id atmel_tcb_of_match[] = { { .compatible = "atmel,at91rm9200-tcb", .data = (void *)16, }, @@ -362,7 +362,6 @@ static int __init tcb_clksrc_init(struct device_node *node) u64 (*tc_sched_clock)(void); u32 rate, divided_rate = 0; int best_divisor_idx = -1; - int clk32k_divisor_idx = -1; int bits; int i; int ret; @@ -416,12 +415,6 @@ static int __init tcb_clksrc_init(struct device_node *node) unsigned divisor = atmel_tcb_divisors[i]; unsigned tmp; - /* remember 32 KiHz clock for later */ - if (!divisor) { - clk32k_divisor_idx = i; - continue; - } - tmp = rate / divisor; pr_debug("TC: %u / %-3u [%d] --> %u\n", rate, divisor, i, tmp); if (best_divisor_idx > 0) { @@ -467,7 +460,7 @@ static int __init tcb_clksrc_init(struct device_node *node) goto err_disable_t1; /* channel 2: periodic and oneshot timer support */ - ret = setup_clkevents(&tc, clk32k_divisor_idx); + ret = setup_clkevents(&tc, ATMEL_TC_TIMER_CLOCK5); if (ret) goto err_unregister_clksrc; -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel