Re: [PATCH 2/3] mmc: sdhci-esdhc-imx: add SD clock limitation for imx6ull

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Hi BOUGH,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on ulf.hansson-mmc/next]
[also build test ERROR on v4.20-rc7 next-20181221]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/BOUGH-CHEN/dt-bindings-mmc-fsl-imx-esdhc-add-imx6ull-compatible-string/20181223-011123
base:   git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc.git next
config: arm-allmodconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.2.0 make.cross ARCH=arm 

All error/warnings (new ones prefixed by >>):

   drivers/mmc//host/sdhci-esdhc-imx.c: In function 'esdhc_pltfm_set_clock':
>> drivers/mmc//host/sdhci-esdhc-imx.c:782:21: error: invalid storage class for function 'esdhc_pltfm_get_ro'
    static unsigned int esdhc_pltfm_get_ro(struct sdhci_host *host)
                        ^~~~~~~~~~~~~~~~~~
>> drivers/mmc//host/sdhci-esdhc-imx.c:782:1: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
    static unsigned int esdhc_pltfm_get_ro(struct sdhci_host *host)
    ^~~~~~
>> drivers/mmc//host/sdhci-esdhc-imx.c:801:13: error: invalid storage class for function 'esdhc_pltfm_set_bus_width'
    static void esdhc_pltfm_set_bus_width(struct sdhci_host *host, int width)
                ^~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/mmc//host/sdhci-esdhc-imx.c:821:13: error: invalid storage class for function 'esdhc_prepare_tuning'
    static void esdhc_prepare_tuning(struct sdhci_host *host, u32 val)
                ^~~~~~~~~~~~~~~~~~~~
>> drivers/mmc//host/sdhci-esdhc-imx.c:838:13: error: invalid storage class for function 'esdhc_post_tuning'
    static void esdhc_post_tuning(struct sdhci_host *host)
                ^~~~~~~~~~~~~~~~~
>> drivers/mmc//host/sdhci-esdhc-imx.c:848:12: error: invalid storage class for function 'esdhc_executing_tuning'
    static int esdhc_executing_tuning(struct sdhci_host *host, u32 opcode)
               ^~~~~~~~~~~~~~~~~~~~~~
>> drivers/mmc//host/sdhci-esdhc-imx.c:884:12: error: invalid storage class for function 'esdhc_change_pinstate'
    static int esdhc_change_pinstate(struct sdhci_host *host,
               ^~~~~~~~~~~~~~~~~~~~~
>> drivers/mmc//host/sdhci-esdhc-imx.c:928:13: error: invalid storage class for function 'esdhc_set_strobe_dll'
    static void esdhc_set_strobe_dll(struct sdhci_host *host)
                ^~~~~~~~~~~~~~~~~~~~
>> drivers/mmc//host/sdhci-esdhc-imx.c:960:13: error: invalid storage class for function 'esdhc_reset_tuning'
    static void esdhc_reset_tuning(struct sdhci_host *host)
                ^~~~~~~~~~~~~~~~~~
>> drivers/mmc//host/sdhci-esdhc-imx.c:982:13: error: invalid storage class for function 'esdhc_set_uhs_signaling'
    static void esdhc_set_uhs_signaling(struct sdhci_host *host, unsigned timing)
                ^~~~~~~~~~~~~~~~~~~~~~~
>> drivers/mmc//host/sdhci-esdhc-imx.c:1034:13: error: invalid storage class for function 'esdhc_reset'
    static void esdhc_reset(struct sdhci_host *host, u8 mask)
                ^~~~~~~~~~~
>> drivers/mmc//host/sdhci-esdhc-imx.c:1042:21: error: invalid storage class for function 'esdhc_get_max_timeout_count'
    static unsigned int esdhc_get_max_timeout_count(struct sdhci_host *host)
                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/mmc//host/sdhci-esdhc-imx.c:1051:13: error: invalid storage class for function 'esdhc_set_timeout'
    static void esdhc_set_timeout(struct sdhci_host *host, struct mmc_command *cmd)
                ^~~~~~~~~~~~~~~~~
>> drivers/mmc//host/sdhci-esdhc-imx.c:1072:27: error: initializer element is not constant
     .get_max_timeout_count = esdhc_get_max_timeout_count,
                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/mmc//host/sdhci-esdhc-imx.c:1072:27: note: (near initialization for 'sdhci_esdhc_ops.get_max_timeout_count')
   drivers/mmc//host/sdhci-esdhc-imx.c:1073:12: error: initializer element is not constant
     .get_ro = esdhc_pltfm_get_ro,
               ^~~~~~~~~~~~~~~~~~
   drivers/mmc//host/sdhci-esdhc-imx.c:1073:12: note: (near initialization for 'sdhci_esdhc_ops.get_ro')
   drivers/mmc//host/sdhci-esdhc-imx.c:1074:17: error: initializer element is not constant
     .set_timeout = esdhc_set_timeout,
                    ^~~~~~~~~~~~~~~~~
   drivers/mmc//host/sdhci-esdhc-imx.c:1074:17: note: (near initialization for 'sdhci_esdhc_ops.set_timeout')
   drivers/mmc//host/sdhci-esdhc-imx.c:1075:19: error: initializer element is not constant
     .set_bus_width = esdhc_pltfm_set_bus_width,
                      ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/mmc//host/sdhci-esdhc-imx.c:1075:19: note: (near initialization for 'sdhci_esdhc_ops.set_bus_width')
   drivers/mmc//host/sdhci-esdhc-imx.c:1076:23: error: initializer element is not constant
     .set_uhs_signaling = esdhc_set_uhs_signaling,
                          ^~~~~~~~~~~~~~~~~~~~~~~
   drivers/mmc//host/sdhci-esdhc-imx.c:1076:23: note: (near initialization for 'sdhci_esdhc_ops.set_uhs_signaling')
   drivers/mmc//host/sdhci-esdhc-imx.c:1077:11: error: initializer element is not constant
     .reset = esdhc_reset,
              ^~~~~~~~~~~
   drivers/mmc//host/sdhci-esdhc-imx.c:1077:11: note: (near initialization for 'sdhci_esdhc_ops.reset')
>> drivers/mmc//host/sdhci-esdhc-imx.c:1088:13: error: invalid storage class for function 'sdhci_esdhc_imx_hwinit'
    static void sdhci_esdhc_imx_hwinit(struct sdhci_host *host)
                ^~~~~~~~~~~~~~~~~~~~~~
>> drivers/mmc//host/sdhci-esdhc-imx.c:1146:1: error: invalid storage class for function 'sdhci_esdhc_imx_probe_dt'
    sdhci_esdhc_imx_probe_dt(struct platform_device *pdev,
    ^~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/mmc//host/sdhci-esdhc-imx.c:1204:12: error: invalid storage class for function 'sdhci_esdhc_imx_probe_nondt'
    static int sdhci_esdhc_imx_probe_nondt(struct platform_device *pdev,
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/mmc//host/sdhci-esdhc-imx.c:1269:12: error: invalid storage class for function 'sdhci_esdhc_imx_probe'
    static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
               ^~~~~~~~~~~~~~~~~~~~~
>> drivers/mmc//host/sdhci-esdhc-imx.c:1385:12: error: invalid storage class for function 'sdhci_esdhc_imx_remove'
    static int sdhci_esdhc_imx_remove(struct platform_device *pdev)
               ^~~~~~~~~~~~~~~~~~~~~~
>> drivers/mmc//host/sdhci-esdhc-imx.c:1408:12: error: invalid storage class for function 'sdhci_esdhc_suspend'
    static int sdhci_esdhc_suspend(struct device *dev)
               ^~~~~~~~~~~~~~~~~~~

vim +/esdhc_pltfm_get_ro +782 drivers/mmc//host/sdhci-esdhc-imx.c

8ba9580a8 Lucas Stach       2013-06-05  781  
913413c30 Shawn Guo         2011-06-21 @782  static unsigned int esdhc_pltfm_get_ro(struct sdhci_host *host)
913413c30 Shawn Guo         2011-06-21  783  {
842afc02c Shawn Guo         2011-07-06  784  	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
070e6d3ff Jisheng Zhang     2016-02-16  785  	struct pltfm_imx_data *imx_data = sdhci_pltfm_priv(pltfm_host);
842afc02c Shawn Guo         2011-07-06  786  	struct esdhc_platform_data *boarddata = &imx_data->boarddata;
913413c30 Shawn Guo         2011-06-21  787  
913413c30 Shawn Guo         2011-06-21  788  	switch (boarddata->wp_type) {
913413c30 Shawn Guo         2011-06-21  789  	case ESDHC_WP_GPIO:
fbe5fdd12 Shawn Guo         2012-12-11  790  		return mmc_gpio_get_ro(host->mmc);
913413c30 Shawn Guo         2011-06-21  791  	case ESDHC_WP_CONTROLLER:
913413c30 Shawn Guo         2011-06-21  792  		return !(readl(host->ioaddr + SDHCI_PRESENT_STATE) &
913413c30 Shawn Guo         2011-06-21  793  			       SDHCI_WRITE_PROTECT);
913413c30 Shawn Guo         2011-06-21  794  	case ESDHC_WP_NONE:
913413c30 Shawn Guo         2011-06-21  795  		break;
913413c30 Shawn Guo         2011-06-21  796  	}
913413c30 Shawn Guo         2011-06-21  797  
913413c30 Shawn Guo         2011-06-21  798  	return -ENOSYS;
913413c30 Shawn Guo         2011-06-21  799  }
913413c30 Shawn Guo         2011-06-21  800  
2317f56c0 Russell King      2014-04-25 @801  static void esdhc_pltfm_set_bus_width(struct sdhci_host *host, int width)
af51079e6 Sascha Hauer      2013-01-21  802  {
af51079e6 Sascha Hauer      2013-01-21  803  	u32 ctrl;
af51079e6 Sascha Hauer      2013-01-21  804  
af51079e6 Sascha Hauer      2013-01-21  805  	switch (width) {
af51079e6 Sascha Hauer      2013-01-21  806  	case MMC_BUS_WIDTH_8:
af51079e6 Sascha Hauer      2013-01-21  807  		ctrl = ESDHC_CTRL_8BITBUS;
af51079e6 Sascha Hauer      2013-01-21  808  		break;
af51079e6 Sascha Hauer      2013-01-21  809  	case MMC_BUS_WIDTH_4:
af51079e6 Sascha Hauer      2013-01-21  810  		ctrl = ESDHC_CTRL_4BITBUS;
af51079e6 Sascha Hauer      2013-01-21  811  		break;
af51079e6 Sascha Hauer      2013-01-21  812  	default:
af51079e6 Sascha Hauer      2013-01-21  813  		ctrl = 0;
af51079e6 Sascha Hauer      2013-01-21  814  		break;
af51079e6 Sascha Hauer      2013-01-21  815  	}
af51079e6 Sascha Hauer      2013-01-21  816  
af51079e6 Sascha Hauer      2013-01-21  817  	esdhc_clrset_le(host, ESDHC_CTRL_BUSWIDTH_MASK, ctrl,
af51079e6 Sascha Hauer      2013-01-21  818  			SDHCI_HOST_CONTROL);
af51079e6 Sascha Hauer      2013-01-21  819  }
af51079e6 Sascha Hauer      2013-01-21  820  
0322191e6 Dong Aisheng      2013-09-13 @821  static void esdhc_prepare_tuning(struct sdhci_host *host, u32 val)
0322191e6 Dong Aisheng      2013-09-13  822  {
0322191e6 Dong Aisheng      2013-09-13  823  	u32 reg;
0322191e6 Dong Aisheng      2013-09-13  824  
0322191e6 Dong Aisheng      2013-09-13  825  	/* FIXME: delay a bit for card to be ready for next tuning due to errors */
0322191e6 Dong Aisheng      2013-09-13  826  	mdelay(1);
0322191e6 Dong Aisheng      2013-09-13  827  
0322191e6 Dong Aisheng      2013-09-13  828  	reg = readl(host->ioaddr + ESDHC_MIX_CTRL);
0322191e6 Dong Aisheng      2013-09-13  829  	reg |= ESDHC_MIX_CTRL_EXE_TUNE | ESDHC_MIX_CTRL_SMPCLK_SEL |
0322191e6 Dong Aisheng      2013-09-13  830  			ESDHC_MIX_CTRL_FBCLK_SEL;
0322191e6 Dong Aisheng      2013-09-13  831  	writel(reg, host->ioaddr + ESDHC_MIX_CTRL);
0322191e6 Dong Aisheng      2013-09-13  832  	writel(val << 8, host->ioaddr + ESDHC_TUNE_CTRL_STATUS);
0322191e6 Dong Aisheng      2013-09-13  833  	dev_dbg(mmc_dev(host->mmc),
d04f8d5b9 Benoît Thébaudeau 2017-05-30  834  		"tuning with delay 0x%x ESDHC_TUNE_CTRL_STATUS 0x%x\n",
0322191e6 Dong Aisheng      2013-09-13  835  			val, readl(host->ioaddr + ESDHC_TUNE_CTRL_STATUS));
0322191e6 Dong Aisheng      2013-09-13  836  }
0322191e6 Dong Aisheng      2013-09-13  837  
0322191e6 Dong Aisheng      2013-09-13 @838  static void esdhc_post_tuning(struct sdhci_host *host)
0322191e6 Dong Aisheng      2013-09-13  839  {
0322191e6 Dong Aisheng      2013-09-13  840  	u32 reg;
0322191e6 Dong Aisheng      2013-09-13  841  
0322191e6 Dong Aisheng      2013-09-13  842  	reg = readl(host->ioaddr + ESDHC_MIX_CTRL);
0322191e6 Dong Aisheng      2013-09-13  843  	reg &= ~ESDHC_MIX_CTRL_EXE_TUNE;
da0295ff1 Dong Aisheng      2016-07-12  844  	reg |= ESDHC_MIX_CTRL_AUTO_TUNE_EN;
0322191e6 Dong Aisheng      2013-09-13  845  	writel(reg, host->ioaddr + ESDHC_MIX_CTRL);
0322191e6 Dong Aisheng      2013-09-13  846  }
0322191e6 Dong Aisheng      2013-09-13  847  
0322191e6 Dong Aisheng      2013-09-13 @848  static int esdhc_executing_tuning(struct sdhci_host *host, u32 opcode)
0322191e6 Dong Aisheng      2013-09-13  849  {
0322191e6 Dong Aisheng      2013-09-13  850  	int min, max, avg, ret;
0322191e6 Dong Aisheng      2013-09-13  851  
0322191e6 Dong Aisheng      2013-09-13  852  	/* find the mininum delay first which can pass tuning */
0322191e6 Dong Aisheng      2013-09-13  853  	min = ESDHC_TUNE_CTRL_MIN;
0322191e6 Dong Aisheng      2013-09-13  854  	while (min < ESDHC_TUNE_CTRL_MAX) {
0322191e6 Dong Aisheng      2013-09-13  855  		esdhc_prepare_tuning(host, min);
9979dbe51 Chaotian Jing     2015-10-27  856  		if (!mmc_send_tuning(host->mmc, opcode, NULL))
0322191e6 Dong Aisheng      2013-09-13  857  			break;
0322191e6 Dong Aisheng      2013-09-13  858  		min += ESDHC_TUNE_CTRL_STEP;
0322191e6 Dong Aisheng      2013-09-13  859  	}
0322191e6 Dong Aisheng      2013-09-13  860  
0322191e6 Dong Aisheng      2013-09-13  861  	/* find the maxinum delay which can not pass tuning */
0322191e6 Dong Aisheng      2013-09-13  862  	max = min + ESDHC_TUNE_CTRL_STEP;
0322191e6 Dong Aisheng      2013-09-13  863  	while (max < ESDHC_TUNE_CTRL_MAX) {
0322191e6 Dong Aisheng      2013-09-13  864  		esdhc_prepare_tuning(host, max);
9979dbe51 Chaotian Jing     2015-10-27  865  		if (mmc_send_tuning(host->mmc, opcode, NULL)) {
0322191e6 Dong Aisheng      2013-09-13  866  			max -= ESDHC_TUNE_CTRL_STEP;
0322191e6 Dong Aisheng      2013-09-13  867  			break;
0322191e6 Dong Aisheng      2013-09-13  868  		}
0322191e6 Dong Aisheng      2013-09-13  869  		max += ESDHC_TUNE_CTRL_STEP;
0322191e6 Dong Aisheng      2013-09-13  870  	}
0322191e6 Dong Aisheng      2013-09-13  871  
0322191e6 Dong Aisheng      2013-09-13  872  	/* use average delay to get the best timing */
0322191e6 Dong Aisheng      2013-09-13  873  	avg = (min + max) / 2;
0322191e6 Dong Aisheng      2013-09-13  874  	esdhc_prepare_tuning(host, avg);
9979dbe51 Chaotian Jing     2015-10-27  875  	ret = mmc_send_tuning(host->mmc, opcode, NULL);
0322191e6 Dong Aisheng      2013-09-13  876  	esdhc_post_tuning(host);
0322191e6 Dong Aisheng      2013-09-13  877  
d04f8d5b9 Benoît Thébaudeau 2017-05-30  878  	dev_dbg(mmc_dev(host->mmc), "tuning %s at 0x%x ret %d\n",
0322191e6 Dong Aisheng      2013-09-13  879  		ret ? "failed" : "passed", avg, ret);
0322191e6 Dong Aisheng      2013-09-13  880  
0322191e6 Dong Aisheng      2013-09-13  881  	return ret;
0322191e6 Dong Aisheng      2013-09-13  882  }
0322191e6 Dong Aisheng      2013-09-13  883  
ad93220de Dong Aisheng      2013-09-13 @884  static int esdhc_change_pinstate(struct sdhci_host *host,
ad93220de Dong Aisheng      2013-09-13  885  						unsigned int uhs)
ad93220de Dong Aisheng      2013-09-13  886  {
ad93220de Dong Aisheng      2013-09-13  887  	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
070e6d3ff Jisheng Zhang     2016-02-16  888  	struct pltfm_imx_data *imx_data = sdhci_pltfm_priv(pltfm_host);
ad93220de Dong Aisheng      2013-09-13  889  	struct pinctrl_state *pinctrl;
ad93220de Dong Aisheng      2013-09-13  890  
ad93220de Dong Aisheng      2013-09-13  891  	dev_dbg(mmc_dev(host->mmc), "change pinctrl state for uhs %d\n", uhs);
ad93220de Dong Aisheng      2013-09-13  892  
ad93220de Dong Aisheng      2013-09-13  893  	if (IS_ERR(imx_data->pinctrl) ||
ad93220de Dong Aisheng      2013-09-13  894  		IS_ERR(imx_data->pins_default) ||
ad93220de Dong Aisheng      2013-09-13  895  		IS_ERR(imx_data->pins_100mhz) ||
ad93220de Dong Aisheng      2013-09-13  896  		IS_ERR(imx_data->pins_200mhz))
ad93220de Dong Aisheng      2013-09-13  897  		return -EINVAL;
ad93220de Dong Aisheng      2013-09-13  898  
ad93220de Dong Aisheng      2013-09-13  899  	switch (uhs) {
ad93220de Dong Aisheng      2013-09-13  900  	case MMC_TIMING_UHS_SDR50:
9f3278453 Haibo Chen        2017-04-19  901  	case MMC_TIMING_UHS_DDR50:
ad93220de Dong Aisheng      2013-09-13  902  		pinctrl = imx_data->pins_100mhz;
ad93220de Dong Aisheng      2013-09-13  903  		break;
ad93220de Dong Aisheng      2013-09-13  904  	case MMC_TIMING_UHS_SDR104:
429a5b45f Dong Aisheng      2013-10-30  905  	case MMC_TIMING_MMC_HS200:
28b07674f Haibo Chen        2015-08-11  906  	case MMC_TIMING_MMC_HS400:
ad93220de Dong Aisheng      2013-09-13  907  		pinctrl = imx_data->pins_200mhz;
ad93220de Dong Aisheng      2013-09-13  908  		break;
ad93220de Dong Aisheng      2013-09-13  909  	default:
ad93220de Dong Aisheng      2013-09-13  910  		/* back to default state for other legacy timing */
ad93220de Dong Aisheng      2013-09-13  911  		pinctrl = imx_data->pins_default;
ad93220de Dong Aisheng      2013-09-13  912  	}
ad93220de Dong Aisheng      2013-09-13  913  
ad93220de Dong Aisheng      2013-09-13  914  	return pinctrl_select_state(imx_data->pinctrl, pinctrl);
ad93220de Dong Aisheng      2013-09-13  915  }
ad93220de Dong Aisheng      2013-09-13  916  
28b07674f Haibo Chen        2015-08-11  917  /*
d04f8d5b9 Benoît Thébaudeau 2017-05-30  918   * For HS400 eMMC, there is a data_strobe line. This signal is generated
28b07674f Haibo Chen        2015-08-11  919   * by the device and used for data output and CRC status response output
28b07674f Haibo Chen        2015-08-11  920   * in HS400 mode. The frequency of this signal follows the frequency of
d04f8d5b9 Benoît Thébaudeau 2017-05-30  921   * CLK generated by host. The host receives the data which is aligned to the
28b07674f Haibo Chen        2015-08-11  922   * edge of data_strobe line. Due to the time delay between CLK line and
28b07674f Haibo Chen        2015-08-11  923   * data_strobe line, if the delay time is larger than one clock cycle,
d04f8d5b9 Benoît Thébaudeau 2017-05-30  924   * then CLK and data_strobe line will be misaligned, read error shows up.
28b07674f Haibo Chen        2015-08-11  925   * So when the CLK is higher than 100MHz, each clock cycle is short enough,
d04f8d5b9 Benoît Thébaudeau 2017-05-30  926   * host should configure the delay target.
28b07674f Haibo Chen        2015-08-11  927   */
28b07674f Haibo Chen        2015-08-11 @928  static void esdhc_set_strobe_dll(struct sdhci_host *host)
28b07674f Haibo Chen        2015-08-11  929  {
28b07674f Haibo Chen        2015-08-11  930  	u32 v;
28b07674f Haibo Chen        2015-08-11  931  
28b07674f Haibo Chen        2015-08-11  932  	if (host->mmc->actual_clock > ESDHC_STROBE_DLL_CLK_FREQ) {
7ac6da262 Dong Aisheng      2016-07-12  933  		/* disable clock before enabling strobe dll */
7ac6da262 Dong Aisheng      2016-07-12  934  		writel(readl(host->ioaddr + ESDHC_VENDOR_SPEC) &
7ac6da262 Dong Aisheng      2016-07-12  935  		       ~ESDHC_VENDOR_SPEC_FRC_SDCLK_ON,
7ac6da262 Dong Aisheng      2016-07-12  936  		       host->ioaddr + ESDHC_VENDOR_SPEC);
7ac6da262 Dong Aisheng      2016-07-12  937  
28b07674f Haibo Chen        2015-08-11  938  		/* force a reset on strobe dll */
28b07674f Haibo Chen        2015-08-11  939  		writel(ESDHC_STROBE_DLL_CTRL_RESET,
28b07674f Haibo Chen        2015-08-11  940  			host->ioaddr + ESDHC_STROBE_DLL_CTRL);
28b07674f Haibo Chen        2015-08-11  941  		/*
28b07674f Haibo Chen        2015-08-11  942  		 * enable strobe dll ctrl and adjust the delay target
28b07674f Haibo Chen        2015-08-11  943  		 * for the uSDHC loopback read clock
28b07674f Haibo Chen        2015-08-11  944  		 */
28b07674f Haibo Chen        2015-08-11  945  		v = ESDHC_STROBE_DLL_CTRL_ENABLE |
28b07674f Haibo Chen        2015-08-11  946  			(7 << ESDHC_STROBE_DLL_CTRL_SLV_DLY_TARGET_SHIFT);
28b07674f Haibo Chen        2015-08-11  947  		writel(v, host->ioaddr + ESDHC_STROBE_DLL_CTRL);
28b07674f Haibo Chen        2015-08-11  948  		/* wait 1us to make sure strobe dll status register stable */
28b07674f Haibo Chen        2015-08-11  949  		udelay(1);
28b07674f Haibo Chen        2015-08-11  950  		v = readl(host->ioaddr + ESDHC_STROBE_DLL_STATUS);
28b07674f Haibo Chen        2015-08-11  951  		if (!(v & ESDHC_STROBE_DLL_STS_REF_LOCK))
28b07674f Haibo Chen        2015-08-11  952  			dev_warn(mmc_dev(host->mmc),
28b07674f Haibo Chen        2015-08-11  953  				"warning! HS400 strobe DLL status REF not lock!\n");
28b07674f Haibo Chen        2015-08-11  954  		if (!(v & ESDHC_STROBE_DLL_STS_SLV_LOCK))
28b07674f Haibo Chen        2015-08-11  955  			dev_warn(mmc_dev(host->mmc),
28b07674f Haibo Chen        2015-08-11  956  				"warning! HS400 strobe DLL status SLV not lock!\n");
28b07674f Haibo Chen        2015-08-11  957  	}
28b07674f Haibo Chen        2015-08-11  958  }
28b07674f Haibo Chen        2015-08-11  959  
d9370424c Haibo Chen        2017-04-18 @960  static void esdhc_reset_tuning(struct sdhci_host *host)
d9370424c Haibo Chen        2017-04-18  961  {
d9370424c Haibo Chen        2017-04-18  962  	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
d9370424c Haibo Chen        2017-04-18  963  	struct pltfm_imx_data *imx_data = sdhci_pltfm_priv(pltfm_host);
d9370424c Haibo Chen        2017-04-18  964  	u32 ctrl;
d9370424c Haibo Chen        2017-04-18  965  
d04f8d5b9 Benoît Thébaudeau 2017-05-30  966  	/* Reset the tuning circuit */
d9370424c Haibo Chen        2017-04-18  967  	if (esdhc_is_usdhc(imx_data)) {
d9370424c Haibo Chen        2017-04-18  968  		if (imx_data->socdata->flags & ESDHC_FLAG_MAN_TUNING) {
d9370424c Haibo Chen        2017-04-18  969  			ctrl = readl(host->ioaddr + ESDHC_MIX_CTRL);
d9370424c Haibo Chen        2017-04-18  970  			ctrl &= ~ESDHC_MIX_CTRL_SMPCLK_SEL;
d9370424c Haibo Chen        2017-04-18  971  			ctrl &= ~ESDHC_MIX_CTRL_FBCLK_SEL;
d9370424c Haibo Chen        2017-04-18  972  			writel(ctrl, host->ioaddr + ESDHC_MIX_CTRL);
d9370424c Haibo Chen        2017-04-18  973  			writel(0, host->ioaddr + ESDHC_TUNE_CTRL_STATUS);
d9370424c Haibo Chen        2017-04-18  974  		} else if (imx_data->socdata->flags & ESDHC_FLAG_STD_TUNING) {
869f8a69b Adrian Hunter     2018-11-15  975  			ctrl = readl(host->ioaddr + SDHCI_AUTO_CMD_STATUS);
d9370424c Haibo Chen        2017-04-18  976  			ctrl &= ~ESDHC_MIX_CTRL_SMPCLK_SEL;
869f8a69b Adrian Hunter     2018-11-15  977  			writel(ctrl, host->ioaddr + SDHCI_AUTO_CMD_STATUS);
d9370424c Haibo Chen        2017-04-18  978  		}
d9370424c Haibo Chen        2017-04-18  979  	}
d9370424c Haibo Chen        2017-04-18  980  }
d9370424c Haibo Chen        2017-04-18  981  

:::::: The code at line 782 was first introduced by commit
:::::: 913413c307c919f8b21edccea23a9fd9d9d49a64 mmc: sdhci-esdhc-imx: extend card_detect and write_protect support for mx5

:::::: TO: Shawn Guo <shawn.guo@xxxxxxxxxx>
:::::: CC: Shawn Guo <shawn.guo@xxxxxxxxxx>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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