diff mbox series

[v1,15/50] clk: samsung: add MPLL rate table in Exynos5420

Message ID 20190715124417.4787-16-l.luba@partner.samsung.com (mailing list archive)
State Not Applicable
Headers show
Series [v1,01/50] clk: samsung: add new IDs for Exynos5420 clocks | expand

Commit Message

Lukasz Luba July 15, 2019, 12:43 p.m. UTC 
The MPLL has fixed frequency left by the bootloader and it is not possible
to change it. With this patch the MPLL gets rate table the same for the
whole PLL family (similar as APLL, KPLL according to RM) so the frequency
might be changed to one of the values defined there.
It is needed for further patches which change the MPLL frequency to feed
the clocks with proper base.
It also sets CLK_IS_CRITICAL for SCLK_MPLL due to some drivers which could
disable master clock, which is then populated higher and tries to disable
PLL, which casues system crash. The flag is needed for this kind of use
cases.

Signed-off-by: Lukasz Luba <l.luba@partner.samsung.com>
---
 drivers/clk/samsung/clk-exynos5420.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/clk/samsung/clk-exynos5420.c b/drivers/clk/samsung/clk-exynos5420.c
index 6d1a0ef9172e..cded46f360f1 100644
--- a/drivers/clk/samsung/clk-exynos5420.c
+++ b/drivers/clk/samsung/clk-exynos5420.c
@@ -687,7 +687,8 @@  static const struct samsung_mux_clock exynos5x_mux_clks[] __initconst = {
 	MUX(CLK_MOUT_USER_ACLK300_GSCL, "mout_user_aclk300_gscl",
 			mout_user_aclk300_gscl_p, SRC_TOP5, 28, 1),
 
-	MUX(0, "mout_sclk_mpll", mout_mpll_p, SRC_TOP6, 0, 1),
+	MUX_F(CLK_MOUT_SCLK_MPLL, "mout_sclk_mpll", mout_mpll_p, SRC_TOP6, 0, 1,
+			CLK_IS_CRITICAL, 0),
 	MUX(CLK_MOUT_VPLL, "mout_sclk_vpll", mout_vpll_p, SRC_TOP6, 4, 1),
 	MUX(CLK_MOUT_SCLK_SPLL, "mout_sclk_spll", mout_spll_p, SRC_TOP6, 8, 1),
 	MUX(0, "mout_sclk_ipll", mout_ipll_p, SRC_TOP6, 12, 1),
@@ -1518,6 +1519,7 @@  static void __init exynos5x_clk_init(struct device_node *np,
 		exynos5x_plls[dpll].rate_table = exynos5420_pll2550x_24mhz_tbl;
 		exynos5x_plls[epll].rate_table = exynos5420_epll_24mhz_tbl;
 		exynos5x_plls[kpll].rate_table = exynos5420_pll2550x_24mhz_tbl;
+		exynos5x_plls[mpll].rate_table = exynos5420_pll2550x_24mhz_tbl;
 	}
 
 	if (soc == EXYNOS5420)