[PATCH 4.19 108/191] soc/tegra: fuse: Correct straps address for older Tegra124 device trees

From: Greg Kroah-Hartman
Date: Fri Feb 21 2020 - 03:27:50 EST


From: Dmitry Osipenko <digetx@xxxxxxxxx>

[ Upstream commit 2d9ea1934f8ef0dfb862d103389562cc28b4fc03 ]

Trying to read out Chip ID before APBMISC registers are mapped won't
succeed, in a result Tegra124 gets a wrong address for the HW straps
register if machine uses an old outdated device tree.

Fixes: 297c4f3dcbff ("soc/tegra: fuse: Restrict legacy code to 32-bit ARM")
Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/soc/tegra/fuse/tegra-apbmisc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/soc/tegra/fuse/tegra-apbmisc.c b/drivers/soc/tegra/fuse/tegra-apbmisc.c
index e5a4d8f98b10e..d1cbb0fe1691a 100644
--- a/drivers/soc/tegra/fuse/tegra-apbmisc.c
+++ b/drivers/soc/tegra/fuse/tegra-apbmisc.c
@@ -135,7 +135,7 @@ void __init tegra_init_apbmisc(void)
apbmisc.flags = IORESOURCE_MEM;

/* strapping options */
- if (tegra_get_chip_id() == TEGRA124) {
+ if (of_machine_is_compatible("nvidia,tegra124")) {
straps.start = 0x7000e864;
straps.end = 0x7000e867;
} else {
--
2.20.1