>-----Original Message----- >From: U-Boot <u-boot-boun...@lists.denx.de> On Behalf Of Wen He >Sent: Thursday, November 14, 2019 12:39 PM >To: u-boot@lists.denx.de >Cc: Andy Tang <andy.t...@nxp.com> >Subject: [U-Boot] [v2] armv8: ls1028a: disable multimedia feature when not >supported > >From: Yuantian Tang <andy.t...@nxp.com> > >Ls1028a has 4 personalities: Ls1028a, Ls1027a, Ls1017a and Ls1018a. >Both Ls1027a and Ls1017a personalities are lower functionality version which >doesn't support the multimedia subsystems, like LCD, GPU. > Please use LS >To disable multimedia feature on non-multimedia version, set the status >property to disabled in dts nodes. > >Signed-off-by: Tang Yuantian <andy.t...@nxp.com> >Signed-off-by: Wen He <wen.h...@nxp.com> >--- >change in v2: > - use LS instead of the ls in commit message. > > arch/arm/cpu/armv8/fsl-layerscape/fdt.c | 21 +++++++++++++++++++++ > 1 file changed, 21 insertions(+) > >diff --git a/arch/arm/cpu/armv8/fsl-layerscape/fdt.c >b/arch/arm/cpu/armv8/fsl-layerscape/fdt.c >index 19917b207a..ef0e2095a6 100644 >--- a/arch/arm/cpu/armv8/fsl-layerscape/fdt.c >+++ b/arch/arm/cpu/armv8/fsl-layerscape/fdt.c >@@ -401,6 +401,24 @@ void fdt_fixup_remove_jr(void *blob) } #endif > >+static void fdt_disable_multimedia(void *blob, unsigned int svr) { >+ int off; >+ >+ if (!((svr >> 10) & 0x1)) Don't use magic numbers >+ return; >+ >+ /* Disable eDP/LCD node */ >+ off = fdt_node_offset_by_compatible(blob, -1, "arm,mali-dp500"); >+ if (off != -FDT_ERR_NOTFOUND) >+ fdt_status_disabled(blob, off); >+ >+ /* Disable GPU node */ >+ off = fdt_node_offset_by_compatible(blob, -1, "fsl,ls1028a-gpu"); >+ if (off != -FDT_ERR_NOTFOUND) >+ fdt_status_disabled(blob, off); >+} >+ > void ft_cpu_setup(void *blob, bd_t *bd) { > struct ccsr_gur __iomem *gur = (void >*)(CONFIG_SYS_FSL_GUTS_ADDR); @@ -462,4 +480,7 @@ void >ft_cpu_setup(void *blob, bd_t *bd) #ifdef >CONFIG_HAS_FEATURE_ENHANCED_MSI > fdt_fixup_msi(blob); > #endif >+#ifdef CONFIG_ARCH_LS1028A >+ fdt_disable_multimedia(blob, svr); >+#endif > } >-- >2.17.1
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