summaryrefslogtreecommitdiffstats
path: root/drivers/soc/tegra/fuse/tegra-apbmisc.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2020-06-05 04:56:20 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-05 04:56:20 +0200
commit828f3e18e1cb98c68fc6db4d5113513d4a267775 (patch)
treee1d813f2122dee697e896166917d58f46dff82c5 /drivers/soc/tegra/fuse/tegra-apbmisc.c
parentMerge tag 'arm-defconfig-5.8' of git://git.kernel.org/pub/scm/linux/kernel/gi... (diff)
parentclk: sprd: fix compile-testing (diff)
downloadlinux-828f3e18e1cb98c68fc6db4d5113513d4a267775.tar.xz
linux-828f3e18e1cb98c68fc6db4d5113513d4a267775.zip
Merge tag 'arm-drivers-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM/SoC driver updates from Arnd Bergmann: "These are updates to SoC specific drivers that did not have another subsystem maintainer tree to go through for some reason: - Some bus and memory drivers for the MIPS P5600 based Baikal-T1 SoC that is getting added through the MIPS tree. - There are new soc_device identification drivers for TI K3, Qualcomm MSM8939 - New reset controller drivers for NXP i.MX8MP, Renesas RZ/G1H, and Hisilicon hi6220 - The SCMI firmware interface can now work across ARM SMC/HVC as a transport. - Mediatek platforms now use a new driver for their "MMSYS" hardware block that controls clocks and some other aspects in behalf of the media and gpu drivers. - Some Tegra processors have improved power management support, including getting woken up by the PMIC and cluster power down during idle. - A new v4l staging driver for Tegra is added. - Cleanups and minor bugfixes for TI, NXP, Hisilicon, Mediatek, and Tegra" * tag 'arm-drivers-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (155 commits) clk: sprd: fix compile-testing bus: bt1-axi: Build the driver into the kernel bus: bt1-apb: Build the driver into the kernel bus: bt1-axi: Use sysfs_streq instead of strncmp bus: bt1-axi: Optimize the return points in the driver bus: bt1-apb: Use sysfs_streq instead of strncmp bus: bt1-apb: Use PTR_ERR_OR_ZERO to return from request-regs method bus: bt1-apb: Fix show/store callback identations bus: bt1-apb: Include linux/io.h dt-bindings: memory: Add Baikal-T1 L2-cache Control Block binding memory: Add Baikal-T1 L2-cache Control Block driver bus: Add Baikal-T1 APB-bus driver bus: Add Baikal-T1 AXI-bus driver dt-bindings: bus: Add Baikal-T1 APB-bus binding dt-bindings: bus: Add Baikal-T1 AXI-bus binding staging: tegra-video: fix V4L2 dependency tee: fix crypto select drivers: soc: ti: knav_qmss_queue: Make knav_gp_range_ops static soc: ti: add k3 platforms chipid module driver dt-bindings: soc: ti: add binding for k3 platforms chipid module ...
Diffstat (limited to 'drivers/soc/tegra/fuse/tegra-apbmisc.c')
-rw-r--r--drivers/soc/tegra/fuse/tegra-apbmisc.c32
1 files changed, 19 insertions, 13 deletions
diff --git a/drivers/soc/tegra/fuse/tegra-apbmisc.c b/drivers/soc/tegra/fuse/tegra-apbmisc.c
index 089d9340564b..3cdd69d1bd4d 100644
--- a/drivers/soc/tegra/fuse/tegra-apbmisc.c
+++ b/drivers/soc/tegra/fuse/tegra-apbmisc.c
@@ -37,6 +37,16 @@ u8 tegra_get_chip_id(void)
return (tegra_read_chipid() >> 8) & 0xff;
}
+u8 tegra_get_major_rev(void)
+{
+ return (tegra_read_chipid() >> 4) & 0xf;
+}
+
+u8 tegra_get_minor_rev(void)
+{
+ return (tegra_read_chipid() >> 16) & 0xf;
+}
+
u32 tegra_read_straps(void)
{
WARN(!chipid, "Tegra ABP MISC not yet available\n");
@@ -65,36 +75,32 @@ static const struct of_device_id apbmisc_match[] __initconst = {
void __init tegra_init_revision(void)
{
- u32 id, chip_id, minor_rev;
- int rev;
+ u8 chip_id, minor_rev;
- id = tegra_read_chipid();
- chip_id = (id >> 8) & 0xff;
- minor_rev = (id >> 16) & 0xf;
+ chip_id = tegra_get_chip_id();
+ minor_rev = tegra_get_minor_rev();
switch (minor_rev) {
case 1:
- rev = TEGRA_REVISION_A01;
+ tegra_sku_info.revision = TEGRA_REVISION_A01;
break;
case 2:
- rev = TEGRA_REVISION_A02;
+ tegra_sku_info.revision = TEGRA_REVISION_A02;
break;
case 3:
if (chip_id == TEGRA20 && (tegra_fuse_read_spare(18) ||
tegra_fuse_read_spare(19)))
- rev = TEGRA_REVISION_A03p;
+ tegra_sku_info.revision = TEGRA_REVISION_A03p;
else
- rev = TEGRA_REVISION_A03;
+ tegra_sku_info.revision = TEGRA_REVISION_A03;
break;
case 4:
- rev = TEGRA_REVISION_A04;
+ tegra_sku_info.revision = TEGRA_REVISION_A04;
break;
default:
- rev = TEGRA_REVISION_UNKNOWN;
+ tegra_sku_info.revision = TEGRA_REVISION_UNKNOWN;
}
- tegra_sku_info.revision = rev;
-
tegra_sku_info.sku_id = tegra_fuse_read_early(FUSE_SKU_INFO);
}