rockchip: rk3188: add boot_devices mapping to support 'same-as-spl'

[oweals/u-boot.git] / arch / arm / mach-snapdragon / clock-apq8096.c

diff --git a/arch/arm/mach-snapdragon/clock-apq8096.c b/arch/arm/mach-snapdragon/clock-apq8096.c
index 3d363d4d66b83ecb02f63b9c079adcd0b9197da5..e5011be8f2e2086340c2f0208d2110bf89aa1e0c 100644 (file)
--- a/arch/arm/mach-snapdragon/clock-apq8096.c
+++ b/arch/arm/mach-snapdragon/clock-apq8096.c
@@ -1,11 +1,10 @@
+// SPDX-License-Identifier: BSD-3-Clause
 /*
  * Clock drivers for Qualcomm APQ8096
  *
  * (C) Copyright 2017 Jorge Ramirez Ortiz <jorge.ramirez-ortiz@linaro.org>
  *
  * Based on Little Kernel driver, simplified
- *
- * SPDX-License-Identifier:    BSD-3-Clause
  */
 
 #include <common.h>
@@ -28,13 +27,19 @@ static const struct bcr_regs sdc_regs = {
        .D = SDCC2_D,
 };
 
-static const struct gpll0_ctrl gpll0_ctrl = {
+static const struct pll_vote_clk gpll0_vote_clk = {
        .status = GPLL0_STATUS,
        .status_bit = GPLL0_STATUS_ACTIVE,
        .ena_vote = APCS_GPLL_ENA_VOTE,
        .vote_bit = APCS_GPLL_ENA_VOTE_GPLL0,
 };
 
+static struct vote_clk gcc_blsp2_ahb_clk = {
+       .cbcr_reg = BLSP2_AHB_CBCR,
+       .ena_vote = APCS_CLOCK_BRANCH_ENA_VOTE,
+       .vote_bit = BIT(15),
+};
+
 static int clk_init_sdc(struct msm_clk_priv *priv, uint rate)
 {
        int div = 3;
@@ -42,12 +47,38 @@ static int clk_init_sdc(struct msm_clk_priv *priv, uint rate)
        clk_enable_cbc(priv->base + SDCC2_AHB_CBCR);
        clk_rcg_set_rate_mnd(priv->base, &sdc_regs, div, 0, 0,
                             CFG_CLK_SRC_GPLL0);
-       clk_enable_gpll0(priv->base, &gpll0_ctrl);
+       clk_enable_gpll0(priv->base, &gpll0_vote_clk);
        clk_enable_cbc(priv->base + SDCC2_APPS_CBCR);
 
        return rate;
 }
 
+static const struct bcr_regs uart2_regs = {
+       .cfg_rcgr = BLSP2_UART2_APPS_CFG_RCGR,
+       .cmd_rcgr = BLSP2_UART2_APPS_CMD_RCGR,
+       .M = BLSP2_UART2_APPS_M,
+       .N = BLSP2_UART2_APPS_N,
+       .D = BLSP2_UART2_APPS_D,
+};
+
+static int clk_init_uart(struct msm_clk_priv *priv)
+{
+       /* Enable AHB clock */
+       clk_enable_vote_clk(priv->base, &gcc_blsp2_ahb_clk);
+
+       /* 7372800 uart block clock @ GPLL0 */
+       clk_rcg_set_rate_mnd(priv->base, &uart2_regs, 1, 192, 15625,
+                            CFG_CLK_SRC_GPLL0);
+
+       /* Vote for gpll0 clock */
+       clk_enable_gpll0(priv->base, &gpll0_vote_clk);
+
+       /* Enable core clk */
+       clk_enable_cbc(priv->base + BLSP2_UART2_APPS_CBCR);
+
+       return 0;
+}
+
 ulong msm_set_rate(struct clk *clk, ulong rate)
 {
        struct msm_clk_priv *priv = dev_get_priv(clk->dev);
@@ -56,6 +87,8 @@ ulong msm_set_rate(struct clk *clk, ulong rate)
        case 0: /* SDC1 */
                return clk_init_sdc(priv, rate);
                break;
+       case 4: /*UART2*/
+               return clk_init_uart(priv);
        default:
                return 0;
        }