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Mon, 31 May 2021 11:43:13 -0400 Received: from mail-io1-xd2f.google.com (mail-io1-xd2f.google.com [IPv6:2607:f8b0:4864:20::d2f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4B6F2C061142; Mon, 31 May 2021 07:30:04 -0700 (PDT) Received: by mail-io1-xd2f.google.com with SMTP id d25so12143991ioe.1; Mon, 31 May 2021 07:30:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=vkRw6dmK4ej/pRDWoMA6XQVoDCwcsDeTmTj+ZH+VKFs=; b=S2vZIhP7Vcm/aN7UgQRB3hAzYJDyjXA++FeUGS94l1n84AAaYf+/zANVRNRt0pCIdw Mp0bxpye8YC9dxzZSua23uEzxFr2wCr8N1DqknSPYewTSurH4o7oyTVIbqpGmzPWqGAd Jbrm7PTM2u4zm2RTVMBYayENEqkGvm7qGtSsiwd6fGuNznHCcDRk7gTIK3ignhGjvHK0 Pueg0YyLfPbPJ2SkRgwzWWSxcFCt0Dau7XsevtaBmce1RxVdzyvF+U7nngZkC7JluwpK dUvxlfq+CZINxMXEdFZVYsQcQtGZmcbWGYdHVXgOHDHbUJCW6rS4F7WUTdfjRZxUdRzM 7YCg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=vkRw6dmK4ej/pRDWoMA6XQVoDCwcsDeTmTj+ZH+VKFs=; b=cDZMZjcKvDGu/oCTsSN6Jukg6VhrIW0cI+OUt+M7irFOHMQgeiZYl7mb/cx45ioRfV sQO7CQitYxp+9EJdGlmpoirQ3eBEfnK6434Tzlz/UtNp/sHppF0YjG0lERe1yn5OWPv8 OCljH8H7WmfyCVr3LnFSvLPr4lLSBrDb+Af2GH1oB4c+Q87AeUYyuxsWWLSwpAhdJeRk 7r3aLeOBqTVdExEEzp2mSgA9kaus8M35LK4AE5nrmzZZ3tv0Be26MKtCdPoL08YXyfRS vqDcB0t0414boS9XVXRowgmKCWwzJrduBjUTCeel7xlyIFuqHOKw/Sm2VsOUGs0mfe3r qJzg== X-Gm-Message-State: AOAM5311p4QELWA2xfLi3fa4rRQ2x9pDBf+vhoUEEqbwbUj/RdbVy7NB Nbq854xHDUE76hzR8C19AmPxMlBbXn5fwxHgNX4= X-Google-Smtp-Source: ABdhPJyFSMyk7SkcBahFxa46Fhser9Vp6+4e2wzprG1W+HsxF7zL856ZsigBNrLRUHy4J5R4biRG6rMDOzqXT7RQi88= X-Received: by 2002:a02:9a17:: with SMTP id b23mr1458557jal.10.1622471403232; Mon, 31 May 2021 07:30:03 -0700 (PDT) MIME-Version: 1.0 References: <1620990152-19255-1-git-send-email-dillon.minfei@gmail.com> <401eb514-27bd-03f6-f7a5-22604882b28a@foss.st.com> <980635c6-5abb-f440-0c3d-cf1ee2dd7bf1@foss.st.com> In-Reply-To: <980635c6-5abb-f440-0c3d-cf1ee2dd7bf1@foss.st.com> From: Dillon Min Date: Mon, 31 May 2021 22:29:27 +0800 Message-ID: Subject: Re: [PATCH 0/4] Fix the i2c/clk bug of stm32 mcu platform To: Patrice CHOTARD Cc: pierre-yves.mordret@foss.st.com, alain.volmat@foss.st.com, Maxime Coquelin , Alexandre TORGUE , Sumit Semwal , christian.koenig@amd.com, Michael Turquette , Stephen Boyd , linux-i2c@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, Linux ARM , Linux Kernel Mailing List , linux-media , "open list:DRM PANEL DRIVERS" , linaro-mm-sig@lists.linaro.org, linux-clk Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Patrice On Mon, May 31, 2021 at 9:51 PM Patrice CHOTARD wrote: > > > > On 5/31/21 3:38 PM, Dillon Min wrote: > > Hi Patrice > > > > Thanks for your time to test my patch. > > > > On Mon, May 31, 2021 at 9:20 PM Patrice CHOTARD > > wrote: > >> > >> Hi Dillon > >> > >> > >> > >> On 5/14/21 1:02 PM, dillon.minfei@gmail.com wrote: > >>> From: Dillon Min > >>> > >>> This seriese fix three i2c/clk bug for stm32 f4/f7 > >>> - kernel runing in sdram, i2c driver get data timeout > >>> - ltdc clk turn off after kernel console active > >>> - kernel hang in set ltdc clock rate > >>> > >>> clk bug found on stm32f429/f469-disco board > >>> > >>> Hi Patrice: > >>> below is the guide to verify the patch: > >>> > >>> setup test env with following files(link at below 'files link'): > >>> [1] u-boot-dtb.bin > >>> [2] rootfs zip file (used in kernel initramfs) > >>> [3] u-boot's mkimage to create itb file > >>> [4] kernel config file > >>> [5] my itb with-or-without i2c patch > >>> > >>> This patch based on kernel commit: > >>> 88b06399c9c766c283e070b022b5ceafa4f63f19 > >>> > >>> Note: > >>> panel-ilitek-ili9341.c is the driver which was submitted last year, but not > >>> get accepted. it's used to setup touch screen calibration, then test i2c. > >>> > >>> create itb file(please correct path of 'data'): > >>> ./mkimage -f stm32.its stm32.itb > >>> > >>> HW setup: > >>> console: > >>> PA9, PA10 > >>> usart0 > >>> serial@40011000 > >>> 115200 8n1 > >>> > >>> -- flash u-boot.bin to stm32f429-disco on PC > >>> $ sudo openocd -f board/stm32f429discovery.cfg -c \ > >>> '{PATH-TO-YOUR-UBOOT}/u-boot-dtb.bin 0x08000000 exit reset' > >>> > >>> -- setup kernel load bootargs at u-boot > >>> U-Boot > setenv bootargs 'console=tty0 console=ttySTM0,115200 > >>> root=/dev/ram rdinit=/linuxrc loglevel=8 fbcon=rotate:2' > >>> U-Boot > loady;bootm > >>> (download stm32.dtb or your kernel with itb format, or download zImage, dtb) > >>> > >> > >> > >> Thanks for these informations > >> I was able to load and boot DTB and uImage directly in SDRAM as you suggested, > >> i saw Linux logo and kernel log on the STM32F429-disco display, > >> but i can't reach the login. > >> > >> The last kernel log i got is : > >> > >> Starting kernel ... > >> > >> [ 0.000000] Booting Linux on physical CPU 0x0 > >> [ 0.000000] Linux version 5.13.0-rc1-00082-g9dbbd5cb6240-dirty (nxp11987@lmecxl0573.lme1 > >> [ 0.000000] CPU: ARMv7-M [410fc241] revision 1 (ARMv7M), cr=00000000 > >> [ 0.000000] CPU: unknown data cache, unknown instruction cache > >> [ 0.000000] OF: fdt: Machine model: STMicroelectronics STM32F429i-DISCO board > >> [ 0.000000] Zone ranges: > >> [ 0.000000] Normal [mem 0x0000000090000000-0x00000000907fffff] > >> [ 0.000000] Movable zone start for each node > >> [ 0.000000] Early memory node ranges > >> > >> [...] > >> > >> [ 2.637564] printk: console [ttySTM0] enabled > >> [ 2.747984] panel-ilitek-ili9341 spi0.1: get optional vcc failed > >> [ 2.758986] spi_stm32 40015000.spi: driver initialized > >> [ 2.795733] i2c /dev entries driver > >> [ 2.849955] stmpe-i2c 0-0041: stmpe811 detected, chip id: 0x811 > >> [ 2.922030] stmpe-ts stmpe-ts: DMA mask not set > >> [ 2.965729] input: stmpe-ts as /devices/platform/soc/40005c00.i2c/i2c-0/0-0041/stmpe-ts0 > >> [ 2.991570] stm32f4-i2c 40005c00.i2c: STM32F4 I2C driver registered > >> [ 3.058262] [drm] Initialized stm 1.0.0 20170330 for 40016800.display-controller on min0 > >> [ 3.665951] panel-ilitek-ili9341 spi0.1: initialized display rgb interface > >> [ 3.765208] Console: switching to colour frame buffer device 30x40 > >> [ 4.014269] stm32-display 40016800.display-controller: [drm] fb0: stmdrmfb frame buffere > >> [ 4.212737] Freeing unused kernel memory: 324K > >> [ 4.287300] This architecture does not have kernel memory protection. > >> [ 4.401202] Run /linuxrc as init process > >> [ 4.478622] with arguments: > >> [ 4.555069] /linuxrc > >> [ 4.595406] with environment: > >> [ 4.672213] HOME=/ > >> [ 4.712511] TERM=linux > >> [ 206.785289] random: crng init done > > > > I guess you didn't add the rootfs to uImage I sent you. > > I do use your rootfs > > > Could you post all the logs from u-boot startup to kernel log end. > > > U-Boot 2021.07-rc2 (May 28 2021 - 17:05:35 +0200) > > DRAM: 8 MiB > Flash: 2 MiB > Loading Environment from Flash... OK > In: serial@40011000 > Out: serial@40011000 > Err: serial@40011000 > Hit any key to stop autoboot: 0 > U-Boot > setenv bootargs 'console=tty0 console=ttySTM0,115200 root=/dev/ram rdinit=/lin' It seems bootargs are broken here. should be setenv bootargs 'console=tty0 console=ttySTM0,115200 root=/dev/ram rdinit=/linuxrc loglevel=8 fbcon=rotate:2' > U-Boot > > U-Boot > > U-Boot > setenv loadaddr 0x90400000 > U-Boot > loady > ## Ready for binary (ymodem) download to 0x90400000 at 115200 bps... > CxyzModem - CRC mode, 156(SOH)/0(STX)/0(CAN) packets, 7 retries > ## Total Size = 0x00004cad = 19629 Bytes > U-Boot > setenv loadaddr 0x90406000 > U-Boot > loady > ## Ready for binary (ymodem) download to 0x90406000 at 115200 bps... > C- CRC mode, 12453(SOH)/0(STX)/0(CAN) packets, 4 retries > ## Total Size = 0x00185140 = 1593664 Bytes > U-Boot > bootm 0x90406000 - 0x90400000 > ## Booting kernel from Legacy Image at 90406000 ... > Image Name: Linux-5.13.0-rc1-00082-g9dbbd5cb > Image Type: ARM Linux Kernel Image (uncompressed) > Data Size: 1593600 Bytes = 1.5 MiB > Load Address: 90008000 > Entry Point: 90008000 > Verifying Checksum ... OK > ## Flattened Device Tree blob at 90400000 > Booting using the fdt blob at 0x90400000 > Loading Kernel Image > Loading Device Tree to 905b9000, end 905c0cac ... OK > > Starting kernel ... > > [ 0.000000] Booting Linux on physical CPU 0x0 > [ 0.000000] Linux version 5.13.0-rc1-00082-g9dbbd5cb6240-dirty (nxp11987@lmecxl0573.lme1 > [ 0.000000] CPU: ARMv7-M [410fc241] revision 1 (ARMv7M), cr=00000000 > [ 0.000000] CPU: unknown data cache, unknown instruction cache > [ 0.000000] OF: fdt: Machine model: STMicroelectronics STM32F429i-DISCO board > [ 0.000000] Zone ranges: > [ 0.000000] Normal [mem 0x0000000090000000-0x00000000907fffff] > [ 0.000000] Movable zone start for each node > [ 0.000000] Early memory node ranges > [ 0.000000] node 0: [mem 0x0000000090000000-0x00000000907fffff] > [ 0.000000] Initmem setup node 0 [mem 0x0000000090000000-0x00000000907fffff] > [ 0.000000] On node 0 totalpages: 2048 > [ 0.000000] Normal zone: 16 pages used for memmap > [ 0.000000] Normal zone: 0 pages reserved > [ 0.000000] Normal zone: 2048 pages, LIFO batch:0 > [ 0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768 > [ 0.000000] pcpu-alloc: [0] 0 > [ 0.000000] Built 1 zonelists, mobility grouping off. Total pages: 2032 > [ 0.000000] Kernel command line: console=tty0 console=ttySTM0,115200 root=/dev/ram rdin2 ditto > [ 0.000000] Dentry cache hash table entries: 1024 (order: 0, 4096 bytes, linear) > [ 0.000000] Inode-cache hash table entries: 1024 (order: 0, 4096 bytes, linear) > [ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off > [ 0.000000] Memory: 5264K/8192K available (1372K kernel code, 302K rwdata, 516K rodata,) > [ 0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 > [ 0.000000] rcu: Preemptible hierarchical RCU implementation. > [ 0.000000] rcu: RCU event tracing is enabled. > [ 0.000000] Trampoline variant of Tasks RCU enabled. > [ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. > [ 0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16 > [ 0.000000] /soc/interrupt-controller@40013c00: bank0 > [ 0.000000] random: get_random_bytes called from start_kernel+0x203/0x370 with crng_ini0 > [ 0.000000] clocksource: arm_system_timer: mask: 0xffffff max_cycles: 0xffffff, max_idls > [ 0.000000] ARM System timer initialized as clocksource > [ 0.000026] sched_clock: 32 bits at 90MHz, resolution 11ns, wraps every 23860929530ns > [ 0.000665] timer@40000c00: STM32 sched_clock registered > [ 0.001275] Switching to timer-based delay loop, resolution 11ns > [ 0.001712] timer@40000c00: STM32 delay timer registered > [ 0.002253] clocksource: timer@40000c00: mask: 0xffffffff max_cycles: 0xffffffff, max_is > [ 0.003076] /soc/timer@40000c00: STM32 clockevent driver initialized (32 bits) > [ 0.014135] Console: colour dummy device 80x30 > [ 0.062375] printk: console [tty0] enabled > [ 0.063843] Calibrating delay loop (skipped), value calculated using timer frequency.. ) > [ 0.066453] pid_max: default: 4096 minimum: 301 > [ 0.071393] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear) > [ 0.073734] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear) > [ 0.104759] rcu: Hierarchical SRCU implementation. > [ 0.111552] devtmpfs: initialized > [ 0.339332] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns:s > [ 0.341835] pinctrl core: initialized pinctrl subsystem > [ 0.658423] stm32f429-pinctrl soc:pin-controller: No package detected, use default one > [ 0.680505] stm32f429-pinctrl soc:pin-controller: GPIOA bank added > [ 0.689824] stm32f429-pinctrl soc:pin-controller: GPIOB bank added > [ 0.699409] stm32f429-pinctrl soc:pin-controller: GPIOC bank added > [ 0.708775] stm32f429-pinctrl soc:pin-controller: GPIOD bank added > [ 0.718094] stm32f429-pinctrl soc:pin-controller: GPIOE bank added > [ 0.727535] stm32f429-pinctrl soc:pin-controller: GPIOF bank added > [ 0.736953] stm32f429-pinctrl soc:pin-controller: GPIOG bank added > [ 0.746404] stm32f429-pinctrl soc:pin-controller: GPIOH bank added > [ 0.756098] stm32f429-pinctrl soc:pin-controller: GPIOI bank added > [ 0.765436] stm32f429-pinctrl soc:pin-controller: GPIOJ bank added > [ 0.774870] stm32f429-pinctrl soc:pin-controller: GPIOK bank added > [ 0.776730] stm32f429-pinctrl soc:pin-controller: Pinctrl STM32 initialized > [ 0.997446] stm32-dma 40026000.dma-controller: STM32 DMA driver registered > [ 1.029604] stm32-dma 40026400.dma-controller: STM32 DMA driver registered > [ 1.043098] clocksource: Switched to clocksource timer@40000c00 > [ 1.358086] workingset: timestamp_bits=30 max_order=11 bucket_order=0 > [ 1.632751] io scheduler mq-deadline registered > [ 1.634287] io scheduler kyber registered > [ 1.650574] STM32 USART driver initialized > [ 1.661272] 40011000.serial: ttySTM0 at MMIO 0x40011000 (irq = 34, base_baud = 5625000)t > [ 2.603317] random: fast init done > [ 2.637564] printk: console [ttySTM0] enabled > [ 2.747984] panel-ilitek-ili9341 spi0.1: get optional vcc failed > [ 2.758986] spi_stm32 40015000.spi: driver initialized > [ 2.795733] i2c /dev entries driver > [ 2.849955] stmpe-i2c 0-0041: stmpe811 detected, chip id: 0x811 > [ 2.922030] stmpe-ts stmpe-ts: DMA mask not set > [ 2.965729] input: stmpe-ts as /devices/platform/soc/40005c00.i2c/i2c-0/0-0041/stmpe-ts0 > [ 2.991570] stm32f4-i2c 40005c00.i2c: STM32F4 I2C driver registered > [ 3.058262] [drm] Initialized stm 1.0.0 20170330 for 40016800.display-controller on min0 > [ 3.665951] panel-ilitek-ili9341 spi0.1: initialized display rgb interface > [ 3.765208] Console: switching to colour frame buffer device 30x40 > [ 4.014269] stm32-display 40016800.display-controller: [drm] fb0: stmdrmfb frame buffere > [ 4.212737] Freeing unused kernel memory: 324K > [ 4.287300] This architecture does not have kernel memory protection. > [ 4.401202] Run /linuxrc as init process > [ 4.478622] with arguments: > [ 4.555069] /linuxrc > [ 4.595406] with environment: > [ 4.672213] HOME=/ > [ 4.712511] TERM=linux > [ 206.785289] random: crng init done > > > > > > If possible, you can try my suggestion. > > - tar -jxf stm32_rootfs.tar.bz2 > > - add stm32_rootfs to your kernel config( enable initramfs) > > As explained above, that's what i did > > > - make O=YOUR_KERNEL_OUT zImage dtbs LOADADDR=0x90008000 > > > > > - create itb file (combine dtb and kernel, initramfs) by mkimage > > ./mkimage -f stm32.its stm32.itb > > I didn't use .itb file, but directly uImage loaded @0x90406000 and stm32f429-disco.dtb loaded @0x90400000 It's fine with manual load dtb and uImage. > > How do you generate .its file ? I refer to u-boot doc , U-BOOT-SOURCE/doc/uImage.FIT/kernel.its you can just change the PATH('data = ' filed) of my stm32.its. you can correct bootargs in u-boot, try again good luck. Thanks Best Regards Dillon > > > > (before above command, make sure you correct stm32.its adapt to your env) > > > > This process will make u-boot to load the kernel more simple. > > > > Thanks. > > > > Best Regards. > > Dillon > > > > > >> > >> > >> I can't test your I2C patch. > >> > >> Patrice > >> > >> > >>> -- setup ts_calibrate running env on stm32f429-disco > >>> / # export TSLIB_CONFFILE=/etc/ts.conf > >>> / # export TSLIB_TSDEVICE=/dev/input/event0 > >>> / # export TSLIB_CONSOLEDEVICE=none > >>> / # export TSLIB_FBDEVICE=/dev/fb0 > >>> > >>> -- clear screen > >>> / # ./fb > >>> > >>> -- run ts_calibrate > >>> / # ts_calibrate > >>> (you can calibrate touchscreen now, and get below errors) > >>> > >>> [ 113.942087] stmpe-i2c0-0041: failed to read regs 0x52: -110 > >>> [ 114.063598] stmpe-i2c 0-0041: failed to read reg 0x4b: -16 > >>> [ 114.185629] stmpe-i2c 0-0041: failed to read reg 0x40: -16 > >>> [ 114.307257] stmpe-i2c 0-0041: failed to write reg 0xb: -16 > >>> > >>> ... > >>> with i2c patch applied, you will find below logs: > >>> > >>> RAW---------------------> 3164 908 183 118.110884 > >>> TS_READ_RAW----> x = 3164, y =908, pressure = 183 > >>> RAW---------------------> 3166 922 126 118.138946 > >>> TS_READ_RAW----> x = 3166, y = 922, pressure = 126 > >>> .... > >>> > >>> files link: > >>> https://drive.google.com/drive/folders/1qNbjChcB6UGtKzne2F5x9_WG_sZFyo3o?usp=sharing > >>> > >>> > >>> > >>> > >>> Dillon Min (4): > >>> drm/panel: Add ilitek ili9341 panel driver > >>> i2c: stm32f4: Fix stmpe811 get xyz data timeout issue > >>> clk: stm32: Fix stm32f429's ltdc driver hang in set clock rate > >>> clk: stm32: Fix ltdc's clock turn off by clk_disable_unused() after > >>> kernel startup > >>> > >>> drivers/clk/clk-stm32f4.c | 10 +- > >>> drivers/gpu/drm/panel/Kconfig | 12 + > >>> drivers/gpu/drm/panel/Makefile | 1 + > >>> drivers/gpu/drm/panel/panel-ilitek-ili9341.c | 1285 ++++++++++++++++++++++++++ > >>> drivers/i2c/busses/i2c-stm32f4.c | 12 +- > >>> 5 files changed, 1310 insertions(+), 10 deletions(-) > >>> create mode 100755 drivers/gpu/drm/panel/panel-ilitek-ili9341.c > >>>