12:10 a.m.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 7d9c6b8147bdd76d7eb2cf6f74f84c6918ae0939
commit: e34645f45805d8308866de7b69f117f554605bb6 [8612/10875] ARM: imx: add smp support
for imx7d
config: arm-randconfig-r011-20210617 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
chmod +x ~/bin/make.cross
#
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi...
git remote add linux-next
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git fetch --no-tags linux-next master
git checkout e34645f45805d8308866de7b69f117f554605bb6
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All warnings (new ones prefixed by >>):
> arch/arm/mach-imx/src.c:103:6: warning: no previous prototype for
'imx_gpcv2_set_core1_pdn_pup_by_software' [-Wmissing-prototypes]
103 |
void imx_gpcv2_set_core1_pdn_pup_by_software(bool pdn)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/imx_gpcv2_set_core1_pdn_pup_by_software +103 arch/arm/mach-imx/src.c
93
94 /*
95 * The motivation for bringing up the second i.MX7D core inside the kernel
96 * is that legacy vendor bootloaders usually do not implement PSCI support.
97 * This is a significant blocker for systems in the field that are running old
98 * bootloader versions to upgrade to a modern mainline kernel version, as only
99 * one CPU of the i.MX7D would be brought up.
100 * Bring up the second i.MX7D core inside the kernel to make the migration
101 * path to mainline kernel easier for the existing iMX7D users.
102 */
103 void imx_gpcv2_set_core1_pdn_pup_by_software(bool pdn)
104 {
105 u32 reg = pdn ? GPC_CPU_PGC_SW_PDN_REQ : GPC_CPU_PGC_SW_PUP_REQ;
106 u32 val, pup;
107 int ret;
108
109 imx_gpcv2_set_m_core_pgc(true, GPC_PGC_C1);
110 val = readl_relaxed(gpc_base + reg);
111 val |= BM_CPU_PGC_SW_PDN_PUP_REQ_CORE1_A7;
112 writel_relaxed(val, gpc_base + reg);
113
114 ret = readl_relaxed_poll_timeout_atomic(gpc_base + reg, pup,
115 !(pup & BM_CPU_PGC_SW_PDN_PUP_REQ_CORE1_A7),
116 5, 1000000);
117 if (ret < 0) {
118 pr_err("i.MX7D: CORE1_A7 power up timeout\n");
119 val &= ~BM_CPU_PGC_SW_PDN_PUP_REQ_CORE1_A7;
120 writel_relaxed(val, gpc_base + reg);
121 }
122
123 imx_gpcv2_set_m_core_pgc(false, GPC_PGC_C1);
124 }
125
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0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org