[U-Boot] [PATCH] 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 Yuantian Tang
>Sent: Thursday, September 26, 2019 11:09 AM
>To: Prabhakar X <prabhakar.kushwaha at nxp.com>
>Cc: u-boot at lists.denx.de; Andy Tang <andy.tang at nxp.com>
>Subject: [U-Boot] [PATCH] armv8: ls1028a: disable multimedia feature when
>not supported
>
>Ls1028a has 4 personalities: ls1028a, ls1027a, ls1017a and ls1018a.
Please use same case : Ls -> ls
>Both ls1027a and ls1017a personalities are lower functionality version which
>doesn't support the multimedia subsystems, like LCD, GPU.
>
>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>
>---
> 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))
>+		return;
>+
Use macros, instead of magic values
>+	/* 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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