linux 使用debugfs查看gpio占用情况

Linux debugfs使用分享 软件查看gpio状态

在调试中加入debugfs有时可以起到事半功倍的效果：

adb shell

#mkdir /data/debug

#mount -t debugfs debugfs /data/debug

#cd /data/debug

查看gpio状态

root@Android:/data/debugfs # cat gpio

GPIOs 0-15:

gpio-0 (front_camera_rst ) out lo

GPIOs 16-42:

gpio-17 (tsl2771_int ) in hi

gpio-26 (ctp_reset ) out hi

gpio-29 (front_camera_pwd ) out hi

gpio-31 (gpio_kp_out ) out lo

gpio-32 (gpio_kp_out ) out lo

gpio-35 (GPIO_E186_POWER ) in lo

gpio-36 (gpio_kp_in ) in hi

gpio-37 (gpio_kp_in ) in hi

gpio-42 (hs_sw ) in hi

GPIOs 43-67:

gpio-48 (ctp_irq ) in hi

gpio-60 (qup_scl ) in hi

gpio-61 (qup_sda ) in hi

GPIOs 68-94:

gpio-76 (lis3dh_acc_int ) in lo

gpio-82 ([auto] ) out hi

gpio-85 (bahama sys_rst_n ) in lo

gpio-94 ([auto] ) out hi

GPIOs 95-106:

gpio-97 (MDP_VSYNC ) in lo

GPIOs 107-132:

gpio-107 (ctp_power ) in hi

gpio-115 (GPIO_E186_WAKEUP ) in lo

gpio-131 (qup_scl ) in hi

gpio-132 (qup_sda ) in hi

查看regulator

root@android:/data/debugfs # cd

regulator/

dummy/ ldo03/ ldo06/ ldo09/ ldo12/ ldo15/ ldo18/ smps1/ smps4/

ldo01/ ldo04/ ldo07/ ldo10/ ldo13/ ldo16/ ldo19/ smps2/

ldo02/ ldo05/ ldo08/ ldo11/ ldo14/ ldo17/ ncp/ smps3/

root@android:/data/debugfs # cat

regulator/ldo10/voltage

3000000

查看clk

root@android:/ #

cat /data/debugfs/clk/

adm_clk/ ebi_mddi_clk/

sdc1_p_clk/

adsp_clk/ ebi_vfe_clk/

sdc2_clk/

ahb_m_clk/ ecodec_clk/

sdc2_p_clk/

ahb_s_clk/ gp_clk/

sdc3_clk/

cam_m_clk/ grp_3d_clk/

sdc3_p_clk/

csi0_clk/ grp_3d_p_clk/

sdc4_clk/

csi0_p_clk/ gsbi1_qup_clk/

sdc4_p_clk/

csi0_vfe_clk/ gsbi1_qup_p_clk/

tsif_p_clk/

csi1_clk/ gsbi2_qup_clk/

tsif_ref_clk/

csi1_p_clk/ gsbi2_qup_p_clk/

uart1_clk/

csi1_vfe_clk/ icodec_rx_clk/

uart1dm_clk/

debug_suspend icodec_tx_clk/

uart2_clk/

dsi_byte_clk/ imem_clk/

uart2dm_clk/

dsi_clk/ mdp_clk/

usb_hs2_clk/

dsi_esc_clk/ mdp_dsi_p_clk/

usb_hs_clk/

dsi_pixel_clk/ mdp_lcdc_pad_pclk_clk/

usb_hs_core_clk/

dsi_ref_clk/ mdp_lcdc_pclk_clk/

usb_hs_p_clk/

ebi1_clk/ mdp_vsync_clk/

usb_phy_clk/

ebi2_clk/ pbus_clk/

vdc_clk/

ebi_acpu_clk/ pcm_clk/

vfe_clk/

ebi_adm_clk/ pmdh_clk/

vfe_mdc_clk/

ebi_grp_3d_clk/ sdac_clk/

ebi_lcdc_clk/ sdc1_clk/

root@android:/ #

cat /data/debugfs/clk/mdp_clk/rate

200000000

from: http://www.linuxidc.com/Linux/2013-04/83311.htm