Re: [U-Boot] [PATCH] video: ipuv3_fb: skip IPU shutdown if IPU was not enabled before

Hi Anatolij,

On Fri, Aug 25, 2017 at 10:10 AM, Anatolij Gustschin agust@denx.de wrote:

void ipuv3_fb_shutdown(void) {

•   int i;
  

•   struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
    struct ipu_stat *stat = (struct ipu_stat *)IPU_STAT;
  

•   u32 reg;
  

•   int i;
  

•   /*
  

•    * Check if IPU clock was enabled before. Won't access
  

•    * IPU registers if clock is not enabled.
  

•    */
  

•   reg = readl(&mxc_ccm->CCGR3);
  

•   if ((reg & MXC_CCM_CCGR3_IPU1_IPU_MASK) == 0)
  

•           return;
  

Maybe you could also check whether IPU2 has been enabled?