mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-04-08 12:02:33 +02:00
c6f24e8591
[ Upstream commitc072c4ef7e] Old Exynos SoCs have both Product ID and Revision ID in one single register, while new SoCs tend to have two separate registers for those IDs. Implement handling of both cases by passing Revision ID register offsets in driver data. Previously existing macros for Exynos4210 (removed in this patch) were incorrect: #define EXYNOS_SUBREV_MASK (0xf << 4) #define EXYNOS_MAINREV_MASK (0xf << 0) Actual format of PRO_ID register in Exynos4210 (offset 0x0): [31:12] Product ID [9:8] Package information [7:4] Main Revision Number [3:0] Sub Revision Number This patch doesn't change the behavior on existing platforms, so '/sys/devices/soc0/revision' will show the same string as before. Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org> Tested-by: Henrik Grimler <henrik@grimler.se> Link: https://lore.kernel.org/r/20211014133508.1210-1-semen.protsenko@linaro.org Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Stable-dep-of:c8222ef6cf("soc: samsung: exynos-chipid: Add NULL pointer check in exynos_chipid_probe()") Signed-off-by: Sasha Levin <sashal@kernel.org>