kernel/linux.git/drivers/soc/tegra, branch v4.4.235

soc/tegra: fuse: Correct straps' address for older Tegra124 device trees

2020-02-28T14:39:02+00:00

[ 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are mapped won't succeed, in a result Tegra124 gets a wrong address for the HW straps register if machine uses an old outdated device tree.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 Signed-off-by: Thierry Reding Signed-off-by: Sasha Levin

soc/tegra: fuse: Fix illegal free of IO base address

2019-04-27T07:33:52+00:00

[ Upstream commit 51294bf6b9e897d595466dcda5a3f2751906a200 ] On cases where device tree entries for fuse and clock provider are in different order, fuse driver needs to defer probing. This leads to freeing incorrect IO base address as the fuse->base variable gets overwritten once during first probe invocation. This leads to the following spew during boot: [ 3.082285] Trying to vfree() nonexistent vm area (00000000cfe8fd94) [ 3.082308] WARNING: CPU: 5 PID: 126 at /hdd/l4t/kernel/stable/mm/vmalloc.c:1511 __vunmap+0xcc/0xd8 [ 3.082318] Modules linked in: [ 3.082330] CPU: 5 PID: 126 Comm: kworker/5:1 Tainted: G S 4.19.7-tegra-gce119d3 #1 [ 3.082340] Hardware name: quill (DT) [ 3.082353] Workqueue: events deferred_probe_work_func [ 3.082364] pstate: 40000005 (nZcv daif -PAN -UAO) [ 3.082372] pc : __vunmap+0xcc/0xd8 [ 3.082379] lr : __vunmap+0xcc/0xd8 [ 3.082385] sp : ffff00000a1d3b60 [ 3.082391] x29: ffff00000a1d3b60 x28: 0000000000000000 [ 3.082402] x27: 0000000000000000 x26: ffff000008e8b610 [ 3.082413] x25: 0000000000000000 x24: 0000000000000009 [ 3.082423] x23: ffff000009221a90 x22: ffff000009f6d000 [ 3.082432] x21: 0000000000000000 x20: 0000000000000000 [ 3.082442] x19: ffff000009f6d000 x18: ffffffffffffffff [ 3.082452] x17: 0000000000000000 x16: 0000000000000000 [ 3.082462] x15: ffff0000091396c8 x14: 0720072007200720 [ 3.082471] x13: 0720072007200720 x12: 0720072907340739 [ 3.082481] x11: 0764076607380765 x10: 0766076307300730 [ 3.082491] x9 : 0730073007300730 x8 : 0730073007280720 [ 3.082501] x7 : 0761076507720761 x6 : 0000000000000102 [ 3.082510] x5 : 0000000000000000 x4 : 0000000000000000 [ 3.082519] x3 : ffffffffffffffff x2 : ffff000009150ff8 [ 3.082528] x1 : 3d95b1429fff5200 x0 : 0000000000000000 [ 3.082538] Call trace: [ 3.082545] __vunmap+0xcc/0xd8 [ 3.082552] vunmap+0x24/0x30 [ 3.082561] __iounmap+0x2c/0x38 [ 3.082569] tegra_fuse_probe+0xc8/0x118 [ 3.082577] platform_drv_probe+0x50/0xa0 [ 3.082585] really_probe+0x1b0/0x288 [ 3.082593] driver_probe_device+0x58/0x100 [ 3.082601] __device_attach_driver+0x98/0xf0 [ 3.082609] bus_for_each_drv+0x64/0xc8 [ 3.082616] __device_attach+0xd8/0x130 [ 3.082624] device_initial_probe+0x10/0x18 [ 3.082631] bus_probe_device+0x90/0x98 [ 3.082638] deferred_probe_work_func+0x74/0xb0 [ 3.082649] process_one_work+0x1e0/0x318 [ 3.082656] worker_thread+0x228/0x450 [ 3.082664] kthread+0x128/0x130 [ 3.082672] ret_from_fork+0x10/0x18 [ 3.082678] ---[ end trace 0810fe6ba772c1c7 ]--- Fix this by retaining the value of fuse->base until driver has successfully probed. Signed-off-by: Timo Alho Acked-by: Jon Hunter Signed-off-by: Thierry Reding Signed-off-by: Sasha Levin

soc/tegra: Don't leak device tree node reference

2019-02-20T09:13:06+00:00

[ Upstream commit 9eb40fa2cd2d1f6829e7b49bb22692f754b9cfe0 ] of_find_node_by_path() acquires a reference to the node returned by it and that reference needs to be dropped by its caller. soc_is_tegra() doesn't do that, so fix it. Signed-off-by: Yangtao Li Acked-by: Jon Hunter [treding: slightly rewrite to avoid inline comparison] Signed-off-by: Thierry Reding Signed-off-by: Sasha Levin

soc/tegra: pmc: Fix child-node lookup

2018-11-21T08:27:37+00:00

commit 1dc6bd5e39a29453bdcc17348dd2a89f1aa4004e upstream. Fix child-node lookup during probe, which ended up searching the whole device tree depth-first starting at the parent rather than just matching on its children. To make things worse, the parent pmc node could end up being prematurely freed as of_find_node_by_name() drops a reference to its first argument. Fixes: 3568df3d31d6 ("soc: tegra: Add thermal reset (thermtrip) support to PMC") Cc: stable # 4.0 Cc: Mikko Perttunen Signed-off-by: Johan Hovold Reviewed-by: Mikko Perttunen Signed-off-by: Thierry Reding Signed-off-by: Greg Kroah-Hartman

soc/tegra: pmc: Use existing pclk reference

2015-08-13T14:49:58+00:00

The driver requests the pclk clock at probe time already and stores its reference to it in struct tegra_pmc, so there is no need to look it up everytime it is needed. Use the existing reference instead. Signed-off-by: Thierry Reding

soc/tegra: pmc: Remove unnecessary return statement

2015-08-13T14:49:43+00:00

Functions returning no value don't need an explicit return statement. Signed-off-by: Thierry Reding

soc: tegra: Remove redundant $(CONFIG_ARCH_TEGRA) in Makefile

2015-08-13T14:17:40+00:00

Kbuild descends into drivers/soc/tegra/ only when CONFIG_ARCH_TEGRA is enabled. (see drivers/soc/Makefile) $(CONFIG_ARCH_TEGRA) in drivers/soc/tegra/Makefile always evaluates to 'y'. Signed-off-by: Masahiro Yamada Signed-off-by: Thierry Reding

soc/tegra: fuse: Add spare bit offset for Tegra210

2015-07-16T08:38:31+00:00

The offset of the first spare bit register on Tegra210 is 0x380, but account for the fixed offset of 0x100 in the fuse accessor. Signed-off-by: Thierry Reding

soc/tegra: fuse: Add spare bit offset for Tegra124

2015-07-16T08:38:31+00:00

The offset of the first spare bit register on Tegra124 is 0x300, but account for the fixed offset of 0x100 in the fuse accessor. Signed-off-by: Thierry Reding

soc/tegra: fuse: Add spare bit offset for Tegra114

2015-07-16T08:38:30+00:00

The offset of the first spare bit register on Tegra114 is 0x280, but account for the fixed offset of 0x100 in the fuse accessor. Signed-off-by: Thierry Reding