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From: Wenyou Yang <wenyou.yang@atmel.com> To: <nicolas.ferre@atmel.com>, <linux@arm.linux.org.uk> Cc: <linux-arm-kernel@lists.infradead.org>, <linux-kernel@vger.kernel.org>, <alexandre.belloni@free-electrons.com>, <sylvain.rochet@finsecur.com>, <peda@axentia.se>, <wenyou.yang@atmel.com> Subject: [PATCH 03/12] pm: at91: pm_slowclock: remove the unused code related with SLOWDOWN_MASTER_CLOCK Date: Tue, 20 Jan 2015 16:16:56 +0800 [thread overview] Message-ID: <1421741825-18226-4-git-send-email-wenyou.yang@atmel.com> (raw) In-Reply-To: <1421741825-18226-1-git-send-email-wenyou.yang@atmel.com> The SLOWDOWN_MASTER_CLOCK definition is not used, remove the redundant code. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> --- arch/arm/mach-at91/pm_slowclock.S | 37 ------------------------------------- 1 file changed, 37 deletions(-) diff --git a/arch/arm/mach-at91/pm_slowclock.S b/arch/arm/mach-at91/pm_slowclock.S index 5859f42..634d819 100644 --- a/arch/arm/mach-at91/pm_slowclock.S +++ b/arch/arm/mach-at91/pm_slowclock.S @@ -11,19 +11,10 @@ * published by the Free Software Foundation. * */ - #include <linux/linkage.h> #include <linux/clk/at91_pmc.h> #include <mach/at91_ramc.h> -/* - * When SLOWDOWN_MASTER_CLOCK is defined we will also slow down the Master - * clock during suspend by adjusting its prescalar and divisor. - * NOTE: This hasn't been shown to be stable on SAM9s; and on the RM9200 there - * are errata regarding adjusting the prescalar and divisor. - */ -#undef SLOWDOWN_MASTER_CLOCK - pmc .req r0 sdramc .req r1 ramc1 .req r2 @@ -165,18 +156,6 @@ sdr_sr_done: wait_mckrdy -#ifdef SLOWDOWN_MASTER_CLOCK - /* - * Set the Master Clock PRES and MDIV fields. - * - * See AT91RM9200 errata #27 and #28 for details. - */ - mov tmp1, #0 - str tmp1, [pmc, #AT91_PMC_MCKR] - - wait_mckrdy -#endif - /* Save PLLA setting and disable it */ ldr tmp1, [pmc, #AT91_CKGR_PLLAR] str tmp1, .saved_pllar @@ -212,22 +191,6 @@ sdr_sr_done: wait_pllalock 4: -#ifdef SLOWDOWN_MASTER_CLOCK - /* - * First set PRES if it was not 0, - * than set CSS and MDIV fields. - * - * See AT91RM9200 errata #27 and #28 for details. - */ - ldr tmp1, .saved_mckr - tst tmp1, #AT91_PMC_PRES - beq 2f - and tmp1, tmp1, #AT91_PMC_PRES - str tmp1, [pmc, #AT91_PMC_MCKR] - - wait_mckrdy -#endif - /* * Restore master clock setting */ -- 1.7.9.5
next prev parent reply other threads:[~2015-01-20 8:19 UTC|newest] Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-01-20 8:16 [PATCH 00/12] AT91 pm cleanup for 3.20 Wenyou Yang 2015-01-20 8:16 ` [PATCH 01/12] pm: at91: pm_slowclock: improve reliability of suspend/resume Wenyou Yang 2015-01-20 8:16 ` [PATCH 02/12] pm: at91: Workaround DDRSDRC self-refresh bug with LPDDR1 memories Wenyou Yang 2015-01-20 8:16 ` Wenyou Yang [this message] 2015-01-20 8:16 ` [PATCH 04/12] pm: at91: move the copying the sram function to the sram initializationi phase Wenyou Yang 2015-01-20 8:16 ` [PATCH 05/12] ARM: at91: move select SRAM to ARCH_AT91 Wenyou Yang 2015-01-23 10:24 ` Alexandre Belloni 2015-01-26 1:10 ` Yang, Wenyou 2015-01-20 8:16 ` [PATCH 06/12] pm: at91: remove the config item CONFIG_AT91_SLOW_CLOCK Wenyou Yang 2015-01-20 8:17 ` [PATCH 07/12] pm: at91: the standby mode uses the same sram function as the suspend to memory mode Wenyou Yang 2015-01-23 10:30 ` Alexandre Belloni 2015-01-23 16:50 ` Sylvain Rochet 2015-01-23 23:13 ` Alexandre Belloni 2015-01-27 3:08 ` Yang, Wenyou 2015-01-23 17:32 ` Sylvain Rochet 2015-01-23 23:02 ` Alexandre Belloni 2015-01-26 3:08 ` Yang, Wenyou 2015-01-26 3:06 ` Yang, Wenyou 2015-01-20 8:17 ` [PATCH 08/12] pm: at91: rename file name: pm_slowclock.S -->pm_suspend.S Wenyou Yang 2015-01-23 19:17 ` Sylvain Rochet 2015-01-23 23:17 ` Alexandre Belloni 2015-01-25 13:30 ` Sylvain Rochet 2015-01-26 1:25 ` Yang, Wenyou 2015-01-20 8:17 ` [PATCH 09/12] pm: at91: rename function name: at91_slow_clock()-->at91_pm_suspend_sram_fn Wenyou Yang 2015-01-20 8:24 ` Wenyou Yang 2015-01-20 8:24 ` [PATCH 10/12] pm: at91: remove the at91_xxx_standby() function definitions in the pm.h Wenyou Yang 2015-01-20 8:25 ` [PATCH 11/12] pm: at91: remove the struct ramc_ids .data at91_xxx_standby members Wenyou Yang 2015-01-20 8:26 ` [PATCH 12/12] pm: at91: amend the pm_suspend entry for at91_cpuidle_device Wenyou Yang
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