[U-Boot] [v2] armv8: ls1028a: disable multimedia feature when not supported

[Priyanka Jain]

>-----Original Message-----
>From: U-Boot <u-boot-bounces at lists.denx.de> On Behalf Of Wen He
>Sent: Thursday, November 14, 2019 12:39 PM
>To: u-boot at lists.denx.de
>Cc: Andy Tang <andy.tang at nxp.com>
>Subject: [U-Boot] [v2] armv8: ls1028a: disable multimedia feature when not
>supported
>
>From: Yuantian Tang <andy.tang at 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.tang at nxp.com>
>Signed-off-by: Wen He <wen.he_1 at 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

-priyankajain