Display the max CPU frequency as well as the current running CPU frequency if the max CPU frequency is available and differs from the current CPU frequency.
Before: CPU: Freescale i.MX6Q rev1.2 at 792 MHz
After - using an 800MHz IMX6DL (running at its max) CPU: Freescale i.MX6DL rev1.1 at 792 MHz
After - using a 1GHz IMX6Q (not running at its max): CPU: Freescale i.MX6Q rev1.2 996 MHz (running at 792 MHz)
Cc: Stefan Roese sr@denx.de Cc: Eric Nelson eric.nelson@boundarydevices.com Cc: Heiko Schocher hs@denx.de Cc: Nikita Kiryanov nikita@compulab.co.il Cc: Jon Nettleton jon.nettleton@gmail.com Cc: Jason Liu r64343@freescale.com Cc: Ye Li b37916@freescale.com Cc: Fabio Estevam fabio.estevam@freescale.com Cc: Christian Gmeiner christian.gmeiner@gmail.com Cc: Markus Niebel Markus.Niebel@tq-group.com Cc: Peng Fan b51431@freescale.com Tested-by: Nikolay Dimitrov picmaster@mail.bg Signed-off-by: Tim Harvey tharvey@gateworks.com --- v3: - fix commit message (mx: mx6 -> imx: mx6) - added Nikolay's tested by v2: - split out from patch that obtains the max cpu freq - add before/after example and more description of change
Signed-off-by: Tim Harvey tharvey@gateworks.com v2: --- arch/arm/imx-common/cpu.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/arch/arm/imx-common/cpu.c b/arch/arm/imx-common/cpu.c index 067d08f..6b20482 100644 --- a/arch/arm/imx-common/cpu.c +++ b/arch/arm/imx-common/cpu.c @@ -142,7 +142,7 @@ const char *get_imx_type(u32 imxtype)
int print_cpuinfo(void) { - u32 cpurev; + u32 cpurev, max_freq;
#if defined(CONFIG_MX6) && defined(CONFIG_IMX6_THERMAL) struct udevice *thermal_dev; @@ -151,11 +151,25 @@ int print_cpuinfo(void)
cpurev = get_cpu_rev();
+#if defined(CONFIG_MX6) + printf("CPU: Freescale i.MX%s rev%d.%d", + get_imx_type((cpurev & 0xFF000) >> 12), + (cpurev & 0x000F0) >> 4, + (cpurev & 0x0000F) >> 0); + max_freq = get_cpu_speed_grade_hz(); + if (!max_freq || max_freq == mxc_get_clock(MXC_ARM_CLK)) { + printf(" at %dMHz\n", mxc_get_clock(MXC_ARM_CLK) / 1000000); + } else { + printf(" %d MHz (running at %d MHz)\n", max_freq / 1000000, + mxc_get_clock(MXC_ARM_CLK) / 1000000); + } +#else printf("CPU: Freescale i.MX%s rev%d.%d at %d MHz\n", get_imx_type((cpurev & 0xFF000) >> 12), (cpurev & 0x000F0) >> 4, (cpurev & 0x0000F) >> 0, mxc_get_clock(MXC_ARM_CLK) / 1000000); +#endif
#if defined(CONFIG_MX6) && defined(CONFIG_IMX6_THERMAL) ret = uclass_get_device(UCLASS_THERMAL, 0, &thermal_dev);