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.
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>
---
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..5a16b63800 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
+void fdt_disable_multimedia(void *blob, unsigned int svr)
+{
+ int off;
+
+ if (!((svr >> 10) & 0x1))
+ 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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