Re: [PATCH v3 0/3] Add Amlogic Meson GX SoC Clock Measure Driver
Neil Armstrong writes: > The Amlogic Meson GX SoCs embeds a clock measurer IP to measure the internal > clocks frequencies. > The precision is determined by stepping into the duration until the counter > overflows. > The debugfs shows a pretty summary and each clock can be measured > individually aswell. > > This patchset includes the dt-bindings, driver and the DT node added to the > meson-gx dtsi. Queued for v4.21... [...] > Neil Armstrong (3): > dt-bindings: amlogic: Add Internal Clock Measurer bindings > soc: amlogic: Add Meson Clock Measure driver ...on branch v4.21/drivers and... > ARM64: dts: meson-gx: Add Internal Clock Measurer node ...on branch v4.21/dt64, Thanks, Kevin
Re: [PATCH v3 0/3] Add Amlogic Meson GX SoC Clock Measure Driver
Neil Armstrong writes: > The Amlogic Meson GX SoCs embeds a clock measurer IP to measure the internal > clocks frequencies. > The precision is determined by stepping into the duration until the counter > overflows. > The debugfs shows a pretty summary and each clock can be measured > individually aswell. > > This patchset includes the dt-bindings, driver and the DT node added to the > meson-gx dtsi. Queued for v4.21... [...] > Neil Armstrong (3): > dt-bindings: amlogic: Add Internal Clock Measurer bindings > soc: amlogic: Add Meson Clock Measure driver ...on branch v4.21/drivers and... > ARM64: dts: meson-gx: Add Internal Clock Measurer node ...on branch v4.21/dt64, Thanks, Kevin
Re: [PATCH v3 0/3] Add Amlogic Meson GX SoC Clock Measure Driver
On Sun, Nov 18, 2018 at 2:51 PM Neil Armstrong wrote: > > The Amlogic Meson GX SoCs embeds a clock measurer IP to measure the internal > clocks frequencies. > The precision is determined by stepping into the duration until the counter > overflows. > The debugfs shows a pretty summary and each clock can be measured > individually aswell. > > This patchset includes the dt-bindings, driver and the DT node added to the > meson-gx dtsi. > > Changes since v2 at [2]: > - Removed all reference to GX > - Added compatibles for meson8/meson8b > - Used Martin's suggestions on the divider naming > - Added Martin's meson8/meson8b clk id table > - Added Martin's fixes to support 32bit SoCs thank you for the updates Neil! here's the output from Odroid-C1: # cat /sys/kernel/debug/meson-clk-msr/measure_summary clock rateprecision - ring_osc_out_ee0 0+/-3125Hz ring_osc_out_ee1 0+/-3125Hz ring_osc_out_ee2 0+/-3125Hz a9_ring_osck 0+/-3125Hz vid_pll 148497596+/-4807Hz clk81 159372396+/-5208Hz encp 148497596+/-4807Hz encl 0+/-3125Hz eth_rmii 12500+/-3906Hz amclk 0+/-3125Hz fec_clk_0 0+/-3125Hz fec_clk_1 0+/-3125Hz fec_clk_2 0+/-3125Hz a9_clk_div16 74998438+/-3125Hz hdmi_sys 0+/-3125Hz rtc_osc_clk_out 32813+/-3125Hz i2s_clk_in_src0 0+/-3125Hz clk_rmii_from_pad 0+/-3125Hz hdmi_ch0_tmds 74248438+/-3125Hz lvds_fifo 0+/-3125Hz sc_clk_int0+/-3125Hz sar_adc 1140625+/-3125Hz mpll_clk_test_out 0+/-3125Hz audac_clkpi 0+/-3125Hz vdac 0+/-3125Hz sdhc_rx 0+/-3125Hz sdhc_sd 0+/-3125Hz mali 0+/-3125Hz hdmi_tx_pixel 7425+/-3125Hz vdin_meas 0+/-3125Hz pcm_sclk 0+/-3125Hz pcm_mclk 0+/-3125Hz eth_rx_tx 0+/-3125Hz pwm_d 0+/-3125Hz pwm_c 2400+/-3125Hz pwm_b 0+/-3125Hz pwm_a 0+/-3125Hz pcm2_sclk 0+/-3125Hz ddr_dpll_pt 0+/-3125Hz pwm_f 0+/-3125Hz pwm_e 0+/-3125Hz hcodec0+/-3125Hz usb_32k_alt 0+/-3125Hz gpio 0+/-3125Hz vid2_pll 0+/-3125Hz mipi_csi_cfg 0+/-3125Hz
Re: [PATCH v3 0/3] Add Amlogic Meson GX SoC Clock Measure Driver
On Sun, Nov 18, 2018 at 2:51 PM Neil Armstrong wrote: > > The Amlogic Meson GX SoCs embeds a clock measurer IP to measure the internal > clocks frequencies. > The precision is determined by stepping into the duration until the counter > overflows. > The debugfs shows a pretty summary and each clock can be measured > individually aswell. > > This patchset includes the dt-bindings, driver and the DT node added to the > meson-gx dtsi. > > Changes since v2 at [2]: > - Removed all reference to GX > - Added compatibles for meson8/meson8b > - Used Martin's suggestions on the divider naming > - Added Martin's meson8/meson8b clk id table > - Added Martin's fixes to support 32bit SoCs thank you for the updates Neil! here's the output from Odroid-C1: # cat /sys/kernel/debug/meson-clk-msr/measure_summary clock rateprecision - ring_osc_out_ee0 0+/-3125Hz ring_osc_out_ee1 0+/-3125Hz ring_osc_out_ee2 0+/-3125Hz a9_ring_osck 0+/-3125Hz vid_pll 148497596+/-4807Hz clk81 159372396+/-5208Hz encp 148497596+/-4807Hz encl 0+/-3125Hz eth_rmii 12500+/-3906Hz amclk 0+/-3125Hz fec_clk_0 0+/-3125Hz fec_clk_1 0+/-3125Hz fec_clk_2 0+/-3125Hz a9_clk_div16 74998438+/-3125Hz hdmi_sys 0+/-3125Hz rtc_osc_clk_out 32813+/-3125Hz i2s_clk_in_src0 0+/-3125Hz clk_rmii_from_pad 0+/-3125Hz hdmi_ch0_tmds 74248438+/-3125Hz lvds_fifo 0+/-3125Hz sc_clk_int0+/-3125Hz sar_adc 1140625+/-3125Hz mpll_clk_test_out 0+/-3125Hz audac_clkpi 0+/-3125Hz vdac 0+/-3125Hz sdhc_rx 0+/-3125Hz sdhc_sd 0+/-3125Hz mali 0+/-3125Hz hdmi_tx_pixel 7425+/-3125Hz vdin_meas 0+/-3125Hz pcm_sclk 0+/-3125Hz pcm_mclk 0+/-3125Hz eth_rx_tx 0+/-3125Hz pwm_d 0+/-3125Hz pwm_c 2400+/-3125Hz pwm_b 0+/-3125Hz pwm_a 0+/-3125Hz pcm2_sclk 0+/-3125Hz ddr_dpll_pt 0+/-3125Hz pwm_f 0+/-3125Hz pwm_e 0+/-3125Hz hcodec0+/-3125Hz usb_32k_alt 0+/-3125Hz gpio 0+/-3125Hz vid2_pll 0+/-3125Hz mipi_csi_cfg 0+/-3125Hz
[PATCH v3 0/3] Add Amlogic Meson GX SoC Clock Measure Driver
The Amlogic Meson GX SoCs embeds a clock measurer IP to measure the internal clocks frequencies. The precision is determined by stepping into the duration until the counter overflows. The debugfs shows a pretty summary and each clock can be measured individually aswell. This patchset includes the dt-bindings, driver and the DT node added to the meson-gx dtsi. Changes since v2 at [2]: - Removed all reference to GX - Added compatibles for meson8/meson8b - Used Martin's suggestions on the divider naming - Added Martin's meson8/meson8b clk id table - Added Martin's fixes to support 32bit SoCs Changes since v1 at [1]: - fixed clock names - added summary in debugfs and moved indivudual clocks into a subdirectory - added the GX table to the match data [1] https://lkml.kernel.org/r/1530624110-4687-1-git-send-email-narmstr...@baylibre.com [2] https://lkml.kernel.org/r/20181114131627.17766-1-narmstr...@baylibre.com Neil Armstrong (3): dt-bindings: amlogic: Add Internal Clock Measurer bindings soc: amlogic: Add Meson Clock Measure driver ARM64: dts: meson-gx: Add Internal Clock Measurer node .../bindings/soc/amlogic/clk-measure.txt | 18 + arch/arm64/boot/dts/amlogic/meson-gx.dtsi | 5 + drivers/soc/amlogic/Kconfig | 8 + drivers/soc/amlogic/Makefile | 1 + drivers/soc/amlogic/meson-clk-measure.c | 350 ++ 5 files changed, 382 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/amlogic/clk-measure.txt create mode 100644 drivers/soc/amlogic/meson-clk-measure.c -- 2.19.1
[PATCH v3 0/3] Add Amlogic Meson GX SoC Clock Measure Driver
The Amlogic Meson GX SoCs embeds a clock measurer IP to measure the internal clocks frequencies. The precision is determined by stepping into the duration until the counter overflows. The debugfs shows a pretty summary and each clock can be measured individually aswell. This patchset includes the dt-bindings, driver and the DT node added to the meson-gx dtsi. Changes since v2 at [2]: - Removed all reference to GX - Added compatibles for meson8/meson8b - Used Martin's suggestions on the divider naming - Added Martin's meson8/meson8b clk id table - Added Martin's fixes to support 32bit SoCs Changes since v1 at [1]: - fixed clock names - added summary in debugfs and moved indivudual clocks into a subdirectory - added the GX table to the match data [1] https://lkml.kernel.org/r/1530624110-4687-1-git-send-email-narmstr...@baylibre.com [2] https://lkml.kernel.org/r/20181114131627.17766-1-narmstr...@baylibre.com Neil Armstrong (3): dt-bindings: amlogic: Add Internal Clock Measurer bindings soc: amlogic: Add Meson Clock Measure driver ARM64: dts: meson-gx: Add Internal Clock Measurer node .../bindings/soc/amlogic/clk-measure.txt | 18 + arch/arm64/boot/dts/amlogic/meson-gx.dtsi | 5 + drivers/soc/amlogic/Kconfig | 8 + drivers/soc/amlogic/Makefile | 1 + drivers/soc/amlogic/meson-clk-measure.c | 350 ++ 5 files changed, 382 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/amlogic/clk-measure.txt create mode 100644 drivers/soc/amlogic/meson-clk-measure.c -- 2.19.1
