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Wed, 25 Jun 2014 23:06:48 +0900 (KST) From: Pankaj Dubey To: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 1/5] ARM: EXYNOS: Add support for mapping PMU base address via DT Date: Wed, 25 Jun 2014 19:33:48 +0530 Message-id: <1403705032-14835-2-git-send-email-pankaj.dubey@samsung.com> X-Mailer: git-send-email 1.7.9.5 In-reply-to: <1403705032-14835-1-git-send-email-pankaj.dubey@samsung.com> References: <1403705032-14835-1-git-send-email-pankaj.dubey@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupgkeLIzCtJLcpLzFFi42JZI2JSq1t5fVWwQfcPAYtlk+6yWXzf9YXd onfBVTaLTY+vsVpc3jWHzWLG+X1MFrcv81p8Ovqf1WLRVqCK9TNes1h0LGO0uPlsO5MDj0dL cw+bx+Yl9R59W1YxenzeJBfAEsVlk5Kak1mWWqRvl8CV0X/7ImPBM7GKu5cvMzUwNgp3MXJy SAiYSOy7084CYYtJXLi3nq2LkYtDSGApo8TvrztYYIruP1jMCpGYzijx6MAWqKoJTBILrq1h BKliE9CVePJ+LjOILSKQLdF/ezULSBGzwGNGiTcrj4IVCQuESSzaexasiEVAVeL3nynsIDav gIfE1/vPgVZwAK1TkJgzyQYkzCngKfFp5newEiGQkpn7mUFmSghsY5f4cvY6K8QcAYlvkw+x QPTKSmw6wAxxtaTEwRU3WCYwCi9gZFjFKJpakFxQnJReZKxXnJhbXJqXrpecn7uJERgLp/89 69/BePeA9SHGZKBxE5mlRJPzgbGUVxJvaGxmZGFqYmpsZG5pRpqwkjjv/YdJQUIC6Yklqdmp qQWpRfFFpTmpxYcYmTg4pRoYV/k6RVx8KyfIkNfl8Wrjs7bfBvtbH5gqM38OtVOL36pavzjQ OPjCN0a93dURnb7cdzw//kwONud3OzM/82zXsfeFaxVKv918cKdEWuLF8kOqstsOZZy80H05 lUfEh727YK1w6bOQ/C3HQs0urfbad8dSQNXAkK92whHNFwlnb3i8+JEqISGmxFKckWioxVxU nAgAvKb/oJsCAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrOIsWRmVeSWpSXmKPExsVy+t9jQd3K66uCDd79YrNYNukum8X3XV/Y LXoXXGWz2PT4GqvF5V1z2CxmnN/HZHH7Mq/Fp6P/WS0WbQWqWD/jNYtFxzJGi5vPtjM58Hi0 NPeweWxeUu/Rt2UVo8fnTXIBLFENjDYZqYkpqUUKqXnJ+SmZeem2St7B8c7xpmYGhrqGlhbm Sgp5ibmptkouPgG6bpk5QIcpKZQl5pQChQISi4uV9O0wTQgNcdO1gGmM0PUNCYLrMTJAAwlr GDP6b19kLHgmVnH38mWmBsZG4S5GTg4JAROJ+w8Ws0LYYhIX7q1n62Lk4hASmM4o8ejAFihn ApPEgmtrGEGq2AR0JZ68n8sMYosIZEv0317NAlLELPCYUeLNyqNgRcICYRKL9p4FK2IRUJX4 /WcKO4jNK+Ah8fX+c6B1HEDrFCTmTLIBCXMKeEp8mvkdrEQIpGTmfuYJjLwLGBlWMYqmFiQX FCel5xrpFSfmFpfmpesl5+duYgRH2jPpHYyrGiwOMQpwMCrx8F6YvTJYiDWxrLgy9xCjBAez kgiv+/5VwUK8KYmVValF+fFFpTmpxYcYTYGOmsgsJZqcD0wCeSXxhsYm5qbGppYmFiZmlkri vAdbrQOFBNITS1KzU1MLUotg+pg4OKUaGPsuT7vlfvHsFpufqXrla5ynz3ok0a11ym7vis4j xnLF5kuVu5bOy97QxlRbLHfo1DffFbP+dEetiLcTPXB/33qRY0f+sX7I2HKG/eKnBWLdzIbd 2ue8A6/MPsQ5/d3uhj3mJ8N1rk1eESP51efi/Nduew9smLr08o7rVa9fRuvY7Hac+UMr2NFC iaU4I9FQi7moOBEAlIHHy8oCAAA= DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140625_070713_269315_BCBB498D X-CRM114-Status: GOOD ( 12.68 ) X-Spam-Score: -5.0 (-----) Cc: kgene.kim@samsung.com, linux@arm.linux.org.uk, naushad@samsung.com, Pankaj Dubey , t.figa@samsung.com, joshi@samsung.com, thomas.ab@samsung.com, vikas.sajjan@samsung.com, chow.kim@samsung.com X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add support for mapping Samsung Power Management Unit (PMU) base address from device tree. Signed-off-by: Pankaj Dubey --- arch/arm/mach-exynos/common.h | 1 + arch/arm/mach-exynos/exynos.c | 45 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 46 insertions(+) diff --git a/arch/arm/mach-exynos/common.h b/arch/arm/mach-exynos/common.h index 3f25f89..f3114be 100644 --- a/arch/arm/mach-exynos/common.h +++ b/arch/arm/mach-exynos/common.h @@ -113,6 +113,7 @@ IS_SAMSUNG_CPU(exynos5800, EXYNOS5800_SOC_ID, EXYNOS5_SOC_MASK) extern void __iomem *sysram_ns_base_addr; extern void __iomem *sysram_base_addr; +extern void __iomem *pmu_base_addr; void exynos_firmware_init(void); diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c index 4a69b3f..82dabc8 100644 --- a/arch/arm/mach-exynos/exynos.c +++ b/arch/arm/mach-exynos/exynos.c @@ -19,6 +19,8 @@ #include #include #include +#include +#include #include #include @@ -31,6 +33,8 @@ #include "regs-pmu.h" #include "regs-sys.h" +void __iomem *pmu_base_addr; + static struct map_desc exynos4_iodesc[] __initdata = { { .virtual = (unsigned long)S3C_VA_SYS, @@ -231,6 +235,46 @@ static void __init exynos_init_io(void) exynos_map_io(); } +static const struct of_device_id exynos_dt_pmu_match[] = { + { .compatible = "samsung,exynos3250-pmu" }, + { .compatible = "samsung,exynos4210-pmu" }, + { .compatible = "samsung,exynos4212-pmu" }, + { .compatible = "samsung,exynos4412-pmu" }, + { .compatible = "samsung,exynos5250-pmu" }, + { .compatible = "samsung,exynos5420-pmu" }, + {}, +}; + +static void exynos_map_pmu(void) +{ + struct device_node *np = NULL; + + np = of_find_matching_node(NULL, exynos_dt_pmu_match); + + if (!np) { + pr_err("Failed to find PMU node\n"); + return; + } + + pmu_base_addr = of_iomap(np, 0); + + if (!pmu_base_addr) + panic("failed to find exynos pmu register\n"); +} + +static void __init exynos_init_time(void) +{ + /* Nothing to do timer specific. + * Since platsmp.c needs pmu base address by the time + * DT is not unflatten so we can't use DT APIs before + * init_time + */ + exynos_map_pmu(); + + of_clk_init(NULL); + clocksource_of_init(); +} + static void __init exynos_dt_machine_init(void) { struct device_node *i2c_np; @@ -306,6 +350,7 @@ DT_MACHINE_START(EXYNOS_DT, "SAMSUNG EXYNOS (Flattened Device Tree)") .smp = smp_ops(exynos_smp_ops), .map_io = exynos_init_io, .init_early = exynos_firmware_init, + .init_time = exynos_init_time, .init_machine = exynos_dt_machine_init, .init_late = exynos_init_late, .dt_compat = exynos_dt_compat,