Re: [PATCH 2/4] clk: qcom: Add common PLL clock controller driver for IPQ SoC

[kernel test robot <lkp@xxxxxxxxx>]

Hi Luo,

kernel test robot noticed the following build errors:

[auto build test ERROR on 222a3380f92b8791d4eeedf7cd750513ff428adf]

url:    https://github.com/intel-lab-lkp/linux/commits/Luo-Jie/dt-bindings-clock-qcom-Add-common-PLL-clock-controller-for-IPQ-SoC/20240808-221059
base:   222a3380f92b8791d4eeedf7cd750513ff428adf
patch link:    https://lore.kernel.org/r/20240808-qcom_ipq_cmnpll-v1-2-b0631dcbf785%40quicinc.com
patch subject: [PATCH 2/4] clk: qcom: Add common PLL clock controller driver for IPQ SoC
config: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20240811/202408110756.rSXn1ZRu-lkp@xxxxxxxxx/config)
compiler: m68k-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240811/202408110756.rSXn1ZRu-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202408110756.rSXn1ZRu-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

   drivers/clk/qcom/clk-ipq-cmn-pll.c: In function 'ipq_cmn_pll_config':
>> drivers/clk/qcom/clk-ipq-cmn-pll.c:96:24: error: implicit declaration of function 'FIELD_PREP' [-Wimplicit-function-declaration]
      96 |                 val |= FIELD_PREP(CMN_PLL_REFCLK_INDEX, 3);
         |                        ^~~~~~~~~~


vim +/FIELD_PREP +96 drivers/clk/qcom/clk-ipq-cmn-pll.c

    77	
    78	static int ipq_cmn_pll_config(struct device *dev, unsigned long parent_rate)
    79	{
    80		void __iomem *base;
    81		u32 val;
    82	
    83		base = devm_of_iomap(dev, dev->of_node, 0, NULL);
    84		if (IS_ERR(base))
    85			return PTR_ERR(base);
    86	
    87		val = readl(base + CMN_PLL_REFCLK_CONFIG);
    88		val &= ~(CMN_PLL_REFCLK_EXTERNAL | CMN_PLL_REFCLK_INDEX);
    89	
    90		/*
    91		 * Configure the reference input clock selection as per the given rate.
    92		 * The output clock rates are always of fixed value.
    93		 */
    94		switch (parent_rate) {
    95		case 25000000:
  > 96			val |= FIELD_PREP(CMN_PLL_REFCLK_INDEX, 3);
    97			break;
    98		case 31250000:
    99			val |= FIELD_PREP(CMN_PLL_REFCLK_INDEX, 4);
   100			break;
   101		case 40000000:
   102			val |= FIELD_PREP(CMN_PLL_REFCLK_INDEX, 6);
   103			break;
   104		case 48000000:
   105			val |= FIELD_PREP(CMN_PLL_REFCLK_INDEX, 7);
   106			break;
   107		case 50000000:
   108			val |= FIELD_PREP(CMN_PLL_REFCLK_INDEX, 8);
   109			break;
   110		case 96000000:
   111			val |= FIELD_PREP(CMN_PLL_REFCLK_INDEX, 7);
   112			val &= ~CMN_PLL_REFCLK_DIV;
   113			val |= FIELD_PREP(CMN_PLL_REFCLK_DIV, 2);
   114			break;
   115		default:
   116			return -EINVAL;
   117		}
   118	
   119		writel(val, base + CMN_PLL_REFCLK_CONFIG);
   120	
   121		/* Update the source clock rate selection. Only 96 MHZ uses 0. */
   122		val = readl(base + CMN_PLL_REFCLK_SRC_SELECTION);
   123		val &= ~CMN_PLL_REFCLK_SRC_DIV;
   124		if (parent_rate != 96000000)
   125			val |= FIELD_PREP(CMN_PLL_REFCLK_SRC_DIV, 1);
   126	
   127		writel(val, base + CMN_PLL_REFCLK_SRC_SELECTION);
   128	
   129		/*
   130		 * Reset the common PLL block by asserting/de-asserting for 100 ms
   131		 * each, to ensure the updated configurations take effect.
   132		 */
   133		val = readl(base + CMN_PLL_POWER_ON_AND_RESET);
   134		val &= ~CMN_ANA_EN_SW_RSTN;
   135		writel(val, base);
   136		msleep(100);
   137	
   138		val |= CMN_ANA_EN_SW_RSTN;
   139		writel(val, base + CMN_PLL_POWER_ON_AND_RESET);
   140		msleep(100);
   141	
   142		return 0;
   143	}
   144	

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