From: Lucas Stach <l.stach@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 1/2] ddr: imx8m: add support for 3720 MHz DDR rate
Date: Tue, 7 Feb 2023 21:11:24 +0100 [thread overview]
Message-ID: <20230207201125.1092406-1-l.stach@pengutronix.de> (raw)
From: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
drivers/ddr/imx8m/ddrphy_utils.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/ddr/imx8m/ddrphy_utils.c b/drivers/ddr/imx8m/ddrphy_utils.c
index 98e6ae648aed..7f863a1736c6 100644
--- a/drivers/ddr/imx8m/ddrphy_utils.c
+++ b/drivers/ddr/imx8m/ddrphy_utils.c
@@ -17,6 +17,7 @@
* clock / 2, which is therefor transfer rate / 4. */
enum ddr_rate {
DDR_4000,
+ DDR_3720,
DDR_3200,
DDR_3000,
DDR_2600, /* Unused */
@@ -52,6 +53,7 @@ static const struct imx8mm_fracpll_config {
bool valid;
} imx8mm_fracpll_table[DDR_NUM_RATES] = {
[DDR_4000] = { .valid = true, .r1 = MDIV(250) | PDIV(3) | SDIV(1), .r2 = 0 },
+ [DDR_3720] = { .valid = true, .r1 = MDIV(310) | PDIV(2) | SDIV(2), .r2 = 0 },
[DDR_3200] = { .valid = true, .r1 = MDIV(300) | PDIV(9) | SDIV(0), .r2 = 0 },
[DDR_3000] = { .valid = true, .r1 = MDIV(250) | PDIV(8) | SDIV(0), .r2 = 0 },
[DDR_2600] = { .valid = true, .r1 = MDIV(325) | PDIV(3) | SDIV(2), .r2 = 0 },
@@ -335,6 +337,7 @@ void ddrphy_init_set_dfi_clk(unsigned int drate_mhz, enum ddrc_type type)
switch (drate_mhz) {
case 4000: drate = DDR_4000; break;
+ case 3720: drate = DDR_3720; break;
case 3200: drate = DDR_3200; break;
case 3000: drate = DDR_3000; break;
case 2400: drate = DDR_2400; break;
--
2.39.1
next reply other threads:[~2023-02-07 20:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-07 20:11 Lucas Stach [this message]
2023-02-07 20:11 ` [PATCH 2/2] ARM: i.MX8MP: add initial Polyhex DEBIX Model A support Lucas Stach
2023-02-07 20:28 ` Ahmad Fatoum
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