ARM: dts: dra7: Add bus_dma_limit for l4 cfg bus

A bus_dma_limit was added for l3 bus by commit cfb5d65f2595
("ARM: dts: dra7: Add bus_dma_limit for L3 bus") to fix an issue
observed only with SATA on DRA7-EVM with 4GB RAM and CONFIG_ARM_LPAE
enabled.

Since kernel 5.13, the SATA issue can be reproduced again following
the SATA node move from L3 bus to L4_cfg in commit 8af15365a368
("ARM: dts: Configure interconnect target module for dra7 sata").

Fix it by adding an empty dma-ranges property to l4_cfg and
segment@100000 nodes (parent device tree node of SATA controller) to
inherit the 2GB dma ranges limit from l3 bus node.

Note: A similar fix was applied for PCIe controller by commit
90d4d3f4ea45 ("ARM: dts: dra7: Fix bus_dma_limit for PCIe").

Fixes: 8af15365a368 ("ARM: dts: Configure interconnect target module for dra7 sata").
Link: https://lore.kernel.org/linux-omap/c583e1bb-f56b-4489-8012-ce742e85f233@smile.fr/
Cc: stable@vger.kernel.org # 5.13
Signed-off-by: Romain Naour <romain.naour@skf.com>
Link: https://lore.kernel.org/r/20241115102537.1330300-1-romain.naour@smile.fr
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

diff --git a/arch/arm/boot/dts/ti/omap/dra7-l4.dtsi b/arch/arm/boot/dts/ti/omap/dra7-l4.dtsi
index 6e67d99832ac25240620828eb2e77633eb1b28c5..ba7fdaae9c6e6d9c6d7da7c5f659a79935c09062 100644 (file)
--- a/arch/arm/boot/dts/ti/omap/dra7-l4.dtsi
+++ b/arch/arm/boot/dts/ti/omap/dra7-l4.dtsi
@@ -12,6 +12,7 @@
        ranges = <0x00000000 0x4a000000 0x100000>,      /* segment 0 */
                 <0x00100000 0x4a100000 0x100000>,      /* segment 1 */
                 <0x00200000 0x4a200000 0x100000>;      /* segment 2 */
+       dma-ranges;
 
        segment@0 {                                     /* 0x4a000000 */
                compatible = "simple-pm-bus";
@@ -557,6 +558,7 @@
                         <0x0007e000 0x0017e000 0x001000>,      /* ap 124 */
                         <0x00059000 0x00159000 0x001000>,      /* ap 125 */
                         <0x0005a000 0x0015a000 0x001000>;      /* ap 126 */
+               dma-ranges;
 
                target-module@2000 {                    /* 0x4a102000, ap 27 3c.0 */
                        compatible = "ti,sysc";