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Date: Wed, 2 Dec 2015 22:19:17 +0100
From: Ben Gamari <ben@...rt-cactus.org>
To: Thomas Abraham <thomas.ab@...sung.com>,
Sylwester Nawrocki <s.nawrocki@...sung.com>,
Michael Turquette <mturquette@...libre.com>,
Kukjin Kim <kgene.kim@...sung.com>,
Kukjin Kim <kgene@...nel.org>,
Viresh Kumar <viresh.kumar@...aro.org>,
Krzysztof Kozlowski <k.kozlowski@...sung.com>
Cc: Tomasz Figa <tomasz.figa@...il.com>,
Lukasz Majewski <l.majewski@...sung.com>,
Heiko Stuebner <heiko@...ech.de>,
Chanwoo Choi <cw00.choi@...sung.com>,
Kevin Hilman <khilman@...aro.org>,
Javier Martinez Canillas <javier@...hile0.org>,
Tobias Jakobi <tjakobi@...h.uni-bielefeld.de>,
Anand Moon <linux.amoon@...il.com>,
linux-samsung-soc@...r.kernel.org, linux-clk@...r.kernel.org,
linux-pm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org, b.zolnierkie@...sung.com,
Mike Turquette <mturquette@...aro.org>,
Javier Martinez Canillas <javier@....samsung.com>,
Ben Gamari <ben@...rt-cactus.org>
Subject: [PATCH 02/12] clk: samsung: exynos5420: add cpu clock configuration data and instantiate cpu clock
From: Thomas Abraham <thomas.ab@...sung.com>
With the addition of the new Samsung specific cpu-clock type, the
arm clock can be represented as a cpu-clock type. Add the CPU clock
configuration data and instantiate the CPU clock type for Exynos5420.
Changes by Bartlomiej:
- split Exynos5420 support from the original patches
- moved E5420_[EGL,KFC]_DIV0() macros to clk-exynos5420.c
Changes by Ben Gamari:
- Rebased
Cc: Tomasz Figa <tomasz.figa@...il.com>
Cc: Mike Turquette <mturquette@...aro.org>
Cc: Javier Martinez Canillas <javier@....samsung.com>
Signed-off-by: Thomas Abraham <thomas.ab@...sung.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Signed-off-by: Ben Gamari <ben@...rt-cactus.org>
---
drivers/clk/samsung/clk-exynos5420.c | 58 ++++++++++++++++++++++++++++++++--
include/dt-bindings/clock/exynos5420.h | 2 ++
2 files changed, 58 insertions(+), 2 deletions(-)
diff --git a/drivers/clk/samsung/clk-exynos5420.c b/drivers/clk/samsung/clk-exynos5420.c
index 389af3c..2288052 100644
--- a/drivers/clk/samsung/clk-exynos5420.c
+++ b/drivers/clk/samsung/clk-exynos5420.c
@@ -18,6 +18,7 @@
#include <linux/syscore_ops.h>
#include "clk.h"
+#include "clk-cpu.h"
#define APLL_LOCK 0x0
#define APLL_CON0 0x100
@@ -616,9 +617,11 @@ static struct samsung_mux_clock exynos5x_mux_clks[] __initdata = {
MUX(0, "mout_mspll_kfc", mout_mspll_cpu_p, SRC_TOP7, 8, 2),
MUX(0, "mout_mspll_cpu", mout_mspll_cpu_p, SRC_TOP7, 12, 2),
- MUX(0, "mout_apll", mout_apll_p, SRC_CPU, 0, 1),
+ MUX_F(0, "mout_apll", mout_apll_p, SRC_CPU, 0, 1,
+ CLK_SET_RATE_PARENT, 0),
MUX(0, "mout_cpu", mout_cpu_p, SRC_CPU, 16, 1),
- MUX(0, "mout_kpll", mout_kpll_p, SRC_KFC, 0, 1),
+ MUX_F(0, "mout_kpll", mout_kpll_p, SRC_KFC, 0, 1,
+ CLK_SET_RATE_PARENT, 0),
MUX(0, "mout_kfc", mout_kfc_p, SRC_KFC, 16, 1),
MUX(0, "mout_aclk200", mout_group1_p, SRC_TOP0, 8, 2),
@@ -1246,6 +1249,50 @@ static struct samsung_pll_clock exynos5x_plls[nr_plls] __initdata = {
KPLL_CON0, NULL),
};
+#define E5420_EGL_DIV0(apll, pclk_dbg, atb, cpud) \
+ ((((apll) << 24) | ((pclk_dbg) << 20) | ((atb) << 16) | \
+ ((cpud) << 4)))
+
+static const struct exynos_cpuclk_cfg_data exynos5420_eglclk_d[] __initconst = {
+ { 1800000, E5420_EGL_DIV0(3, 7, 7, 4), },
+ { 1700000, E5420_EGL_DIV0(3, 7, 7, 3), },
+ { 1600000, E5420_EGL_DIV0(3, 7, 7, 3), },
+ { 1500000, E5420_EGL_DIV0(3, 7, 7, 3), },
+ { 1400000, E5420_EGL_DIV0(3, 7, 7, 3), },
+ { 1300000, E5420_EGL_DIV0(3, 7, 7, 2), },
+ { 1200000, E5420_EGL_DIV0(3, 7, 7, 2), },
+ { 1100000, E5420_EGL_DIV0(3, 7, 7, 2), },
+ { 1000000, E5420_EGL_DIV0(3, 6, 6, 2), },
+ { 900000, E5420_EGL_DIV0(3, 6, 6, 2), },
+ { 800000, E5420_EGL_DIV0(3, 5, 5, 2), },
+ { 700000, E5420_EGL_DIV0(3, 5, 5, 2), },
+ { 600000, E5420_EGL_DIV0(3, 4, 4, 2), },
+ { 500000, E5420_EGL_DIV0(3, 3, 3, 2), },
+ { 400000, E5420_EGL_DIV0(3, 3, 3, 2), },
+ { 300000, E5420_EGL_DIV0(3, 3, 3, 2), },
+ { 200000, E5420_EGL_DIV0(3, 3, 3, 2), },
+ { 0 },
+};
+
+#define E5420_KFC_DIV(kpll, pclk, aclk) \
+ ((((kpll) << 24) | ((pclk) << 20) | ((aclk) << 4)))
+
+static const struct exynos_cpuclk_cfg_data exynos5420_kfcclk_d[] __initconst = {
+ { 1300000, E5420_KFC_DIV(3, 5, 2), },
+ { 1200000, E5420_KFC_DIV(3, 5, 2), },
+ { 1100000, E5420_KFC_DIV(3, 5, 2), },
+ { 1000000, E5420_KFC_DIV(3, 5, 2), },
+ { 900000, E5420_KFC_DIV(3, 5, 2), },
+ { 800000, E5420_KFC_DIV(3, 5, 2), },
+ { 700000, E5420_KFC_DIV(3, 4, 2), },
+ { 600000, E5420_KFC_DIV(3, 4, 2), },
+ { 500000, E5420_KFC_DIV(3, 4, 2), },
+ { 400000, E5420_KFC_DIV(3, 3, 2), },
+ { 300000, E5420_KFC_DIV(3, 3, 2), },
+ { 200000, E5420_KFC_DIV(3, 3, 2), },
+ { 0 },
+};
+
static const struct of_device_id ext_clk_match[] __initconst = {
{ .compatible = "samsung,exynos5420-oscclk", .data = (void *)0, },
{ },
@@ -1310,6 +1357,13 @@ static void __init exynos5x_clk_init(struct device_node *np,
ARRAY_SIZE(exynos5800_gate_clks));
}
+ exynos_register_cpu_clock(ctx, CLK_ARM_CLK, "armclk",
+ mout_cpu_p[0], mout_cpu_p[1], 0x200,
+ exynos5420_eglclk_d, ARRAY_SIZE(exynos5420_eglclk_d), 0);
+ exynos_register_cpu_clock(ctx, CLK_KFC_CLK, "kfcclk",
+ mout_kfc_p[0], mout_kfc_p[1], 0x28200,
+ exynos5420_kfcclk_d, ARRAY_SIZE(exynos5420_kfcclk_d), 0);
+
exynos5420_clk_sleep_init();
samsung_clk_of_add_provider(np, ctx);
diff --git a/include/dt-bindings/clock/exynos5420.h b/include/dt-bindings/clock/exynos5420.h
index 99da0d1..dde9664 100644
--- a/include/dt-bindings/clock/exynos5420.h
+++ b/include/dt-bindings/clock/exynos5420.h
@@ -25,6 +25,8 @@
#define CLK_FOUT_MPLL 10
#define CLK_FOUT_BPLL 11
#define CLK_FOUT_KPLL 12
+#define CLK_ARM_CLK 13
+#define CLK_KFC_CLK 14
/* gate for special clocks (sclk) */
#define CLK_SCLK_UART0 128
--
2.6.2
--
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