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

[Yuantian Tang]

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.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;
+
+	/* 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