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authorKevin Hilman <khilman@linaro.org>2014-12-15 13:59:43 -0800
committerKevin Hilman <khilman@linaro.org>2014-12-15 13:59:43 -0800
commit1888d2fa314033755026ceddee1fff8f80659fe4 (patch)
treeb0085323f5db6dca5f259b92038e27843c5a43a6 /drivers/clocksource/arm_arch_timer.c
parent9d312cd12e89ce08add99fe66e8f6baeaca16d7d (diff)
parent661ea91b676bcca137c1c3fe838997925ce98060 (diff)
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Merge tag 'omap-for-v3.19/fixes-for-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
From: Tony Lindgren <tony@atomide.com> Subject: [GIT PULL] few fixes for the v3.19 merge window Fixes for a few issues found that would be good to get into -rc1: - Update SoC revision detection for am43x es1.2 - Fix regression with GPMC timings on 2430sdp for some versions of u-boot - Fix dra7 watchdog compatible property - Fix am437x-sk-evm LCD timings - Fix dra7 DSS clock muxing - Fix dra7-evm voltages - Remove a unused function prototype for am33xx_clk_init - Enable AHCI in the omap2plus_defconfig * tag 'omap-for-v3.19/fixes-for-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (1601 commits) ARM: omap2plus_defconfig: Enable AHCI_PLATFORM driver ARM: dts: am437x-sk-evm.dts: fix LCD timings ARM: dts: dra7-evm: Update SMPS7 (VDD_CORE) max voltage to match DM ARM: dts: dra7-evm: Fix typo in SMPS6 (VDD_GPU) max voltage ARM: OMAP2+: AM43x: Add ID for ES1.2 ARM: dts: am437x-sk: fix lcd enable pin mux data ARM: dts: Fix gpmc regression for omap 2430sdp smc91x hwmon: (tmp401) Detect TMP435 on all addresses it supports mfd: rtsx: Add func to split u32 into register mmc: sdhci-msm: Convert to mmc_send_tuning() mmc: sdhci-esdhc-imx: Convert to mmc_send_tuning() mmc: core: Let mmc_send_tuning() to take struct mmc_host* as parameter nios2: Make NIOS2_CMDLINE_IGNORE_DTB depend on CMDLINE_BOOL nios2: Add missing NR_CPUS to Kconfig nios2: asm-offsets: Remove unused definition TI_TASK nios2: Remove write-only struct member from nios2_timer nios2: Remove unused extern declaration of shm_align_mask nios2: include linux/type.h in io.h nios2: move include asm-generic/io.h to end of file nios2: remove include asm-generic/iomap.h from io.h ...
Diffstat (limited to 'drivers/clocksource/arm_arch_timer.c')
-rw-r--r--drivers/clocksource/arm_arch_timer.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c
index 43005d4d3348..6a79fc4f900c 100644
--- a/drivers/clocksource/arm_arch_timer.c
+++ b/drivers/clocksource/arm_arch_timer.c
@@ -462,7 +462,10 @@ static void __init arch_counter_register(unsigned type)
/* Register the CP15 based counter if we have one */
if (type & ARCH_CP15_TIMER) {
- arch_timer_read_counter = arch_counter_get_cntvct;
+ if (arch_timer_use_virtual)
+ arch_timer_read_counter = arch_counter_get_cntvct;
+ else
+ arch_timer_read_counter = arch_counter_get_cntpct;
} else {
arch_timer_read_counter = arch_counter_get_cntvct_mem;
@@ -702,6 +705,14 @@ static void __init arch_timer_init(struct device_node *np)
arch_timer_detect_rate(NULL, np);
/*
+ * If we cannot rely on firmware initializing the timer registers then
+ * we should use the physical timers instead.
+ */
+ if (IS_ENABLED(CONFIG_ARM) &&
+ of_property_read_bool(np, "arm,cpu-registers-not-fw-configured"))
+ arch_timer_use_virtual = false;
+
+ /*
* If HYP mode is available, we know that the physical timer
* has been configured to be accessible from PL1. Use it, so
* that a guest can use the virtual timer instead.